Academic article

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• Erland Hegardt Hall; Marit Holm Sølsnes; Sverre Sandberg et al. (2025). Patient self-management of warfarin therapy – a long-term follow up study. (external link)
• Liesbet Deprez; Jesper V. Johansen; Thomas Keller et al. (2025). Recommendations for assessing commutability of a replacement batch of a secondary calibrator certified reference material. (external link)
• Pernille Kjeilen Fauskanger; Sverre Sandberg; Jesper Johansen et al. (2025). Quantification of Difference in Nonselectivity Between In Vitro Diagnostic Medical Devices. (external link)
• Berna Aslan; Anna Carobene; Niels Jonker et al. (2025). Systematic review and meta-analysis of biological variation data of urine albumin, albumin to creatinine ratio and other markers in urine. (external link)
• Veronica Sansoni; Giovanni Lombardi; Jorge Díaz–Garzón et al. (2025). Novel biomarkers in bone pathophysiology: Establishing reference intervals and biological variations estimates for serum leptin, sclerostin, lipocalin-2, osteoprotegerin, resistin and Dickkopf-related protein-1 from the European biological variation study (EuBIVAS) populations. (external link)
• Grethe Åstrøm Ueland; Tony Ernes; Tone Vonheim Madsen et al. (2024). Women Suffered More Than Men Both During and After the COVID‐19 Pandemic—A Cross‐Sectional Study Among 29,079 Patients With Type 2 Diabetes. (external link)
• Patti Shih; Sverre Sandberg; Jan Balla et al. (2024). Direct-to-consumer testing as consumer initiated testing: compromises to the testing process and opportunities for quality improvement. (external link)
• Abdurrahman Coşkun; Sverre Sandberg; Ibrahim Unsal et al. (2024). Reference Intervals Revisited: A Novel Model for Population-Based Reference Intervals, Using a Small Sample Size and Biological Variation Data. (external link)
• Hatuia Bø Tibelles; Anne Karen Jenum; Lars Johannessen Kirkebøen et al. (2024). High prevalence of retinopathy in young-onset type 2 diabetes and possible sex differences: insights from Norwegian general practice. (external link)
• Graham R.D. Jones; Katy J.L. Bell; Ferruccio Ceriotti et al. (2024). Applying the Milan models to setting analytical performance specifications - Considering all the information. (external link)
• Abdurrahman Coşkun; Anna Carobene; Ozlem Demirelce et al. (2024). Sex-related differences in within-subject biological variation estimates for 22 essential and non-essential amino acids. (external link)
• Graham R.D. Jones; Aasne Karine Aarsand; Anna Carobene et al. (2024). A New Concept for Reference Change Values—Regression to the Population Mean. (external link)
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• Abdurrahman Coşkun; Sverre Sandberg; Ibrahim Unsal et al. (2023). Personalized and Population-Based Reference Intervals for 48 Common Clinical Chemistry and Hematology Measurands: A Comparative Study. (external link)
• Wagner S. Brum; Nicholas Ashton; Joel Simrén et al. (2023). Biological variation estimates of Alzheimer's disease plasma biomarkers in healthy individuals. (external link)
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• Wytze P. Oosterhuis; Abdurrahman Coskun; Sverre Sandberg et al. (2023). Performance specifications for sodium should not be based on biological variation. (external link)
• Sverre Sandberg; Pernille Kjeilen Fauskanger; Jesper V. Johansen et al. (2023). Recommendations for Setting a Criterion and Assessing Commutability of Sample Materials Used in External Quality Assessment/Proficiency Testing Schemes. (external link)
• Tone Vonheim Madsen; John Cooper; Siri Carlsen et al. (2023). Intensified follow-up of patients with type 1 diabetes and poor glycaemic control: A multicentre quality improvement collaborative based on data from the Norwegian Diabetes Register for Adults. (external link)
• Penelope E. Stein; Yonatan Edel; Razan Mansour et al. (2023). Key terms and definitions in acute porphyrias: Results of an international Delphi consensus led by the European porphyria network. (external link)
• Jorge Diaz-Garzon; Pilar Fernandez-Calle; Aasne Karine Aarsand et al. (2023). Long-Term Within- and Between-Subject Biological Variation Data of Hematological Parameters in Recreational Endurance Athletes. (external link)
• Aslaug Johanne Risøy; Reidun Lisbet Skeide Kjome; Sverre Sandberg et al. (2023). Diabetes risk assessments and HbA1c-measurements in community pharmacies. (external link)
• Gro Gidske; Sverre Sandberg; Pernille Kjeilen Fauskanger et al. (2023). Aggregated data from the same laboratories participating in two glucose external quality assessment schemes show that commutability and transfers of values to control materials are decisive for the biases found. (external link)
• Martine J. Hollestelle; Ann-Helen Kristoffersen; René N. Idema et al. (2023). Systematic review and meta-analysis of within-subject and between-subject biological variation data of coagulation and fibrinolytic measurands. (external link)
• Jorge Diaz-Garzon; Outi Itkonen; Aasne Karine Aarsand et al. (2023). Biological variation of inflammatory and iron metabolism markers in high-endurance recreational athletes; Are these markers useful for athlete monitoring?. (external link)
• W. Greg Miller; Thomas Keller; Jeffrey Budd et al. (2023). Recommendations for Setting a Criterion for Assessing Commutability of Secondary Calibrator Certified Reference Materials. (external link)
• Ibrahimu Mdala; Kjersti Nøkleby; Tore Julsrud Berg et al. (2023). Insulin initiation in patients with type 2 diabetes is often delayed, but access to a diabetes nurse may help—insights from Norwegian general practice. (external link)
• Carl Michael Baravelli; Aasne Karine Aarsand; Sverre Sandberg et al. (2022). Porphyria cutanea tarda and patterns of long-term sick leave and disability pension: a 24-year nationwide matched-cohort study. (external link)
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• Rachel Bedenis Forster; Ragnhild Bjarkøy Strandberg; Katrina Louise Bø Tibballs et al. (2022). Cohort profile: Outcomes & Multi-morbidity In Type 2 diabetes (OMIT) - a national registry-based observational cohort with focus on care and treatment of key high-risk groups in Norway. (external link)
• Grethe Åstrøm Ueland; Tony Ernes; Tone Vonheim Madsen et al. (2022). Fear of Covid 19 during the third wave of infection in Norwegian patients with type 1 diabetes. (external link)
• Anne Stavelin; Eva Rønneseth; Gro Gidske et al. (2022). Using three external quality assurance schemes to achieve equivalent international normalized ratio results in primary and secondary healthcare. (external link)
• Anne Elisabeth Solsvik; Ann-Helen Kristoffersen; Sverre Sandberg et al. (2022). A national surveillance program for evaluating new reagent lots in medical laboratories. (external link)
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• Kristina Barbara Slåtsve; Tor Claudi; Knut Tore Lappegård et al. (2022). Level of education is associated with coronary heart disease and chronic kidney disease in individuals with type 2 diabetes: a population-based study. (external link)
• Tony Badrick; Graham Jones; W. Greg Miller et al. (2022). Differences between Educational and Regulatory External Quality Assurance/Proficiency Testing Schemes. (external link)
• Tze Ping Loh; Sverre Sandberg; Andrea Rita Horvath (2022). Lot-to-lot reagent verification: Challenges and possible solutions. (external link)
• Jorge Diaz-Garzon; Pilar Fernandez-Calle; Aasne Karine Aarsand et al. (2021). Long-term within- And between-subject biological variation of 29 routine laboratory measurands in athletes. (external link)
• Abdurrahman Coşkun; Aasne Karine Aarsand; Sverre Sandberg et al. (2021). Within- And between-subject biological variation data for tumor markers based on the European Biological Variation Study. (external link)
• Mette Christophersen Tollånes; Pål Jenum; Helene Kierkegaard et al. (2021). Evaluation of 32 rapid tests for detection of antibodies against SARS-CoV-2. (external link)
• Kristina Barbara Slåtsve; Tor Claudi; Knut Tore Lappegård et al. (2021). Factors associated with treatment in primary versus specialist care: A population-based study of people with type 2 and type 1 diabetes. (external link)
• Eline A. E van der Hagen; Cas Weykamp; Sverre Sandberg et al. (2021). Feasibility for aggregation of commutable external quality assessment results to evaluate metrological traceability and agreement among results. (external link)
• Jordi To-Figueras; Robin Wijngaard; Judit García-Villoria et al. (2021). Dysregulation of homocysteine homeostasis in acute intermittent porphyria patients receiving heme arginate or givosiran. (external link)
• Jenny A. Doust; Katy J. L. Bell; Mariska M.G. Leeflang et al. (2021). Guidance for the design and reporting of studies evaluating the clinical performance of tests for present or past SARS-CoV-2 infection. (external link)
• Abdurrahman Coşkun; Sverre Sandberg; Ibrahim Unsal et al. (2021). Personalized Reference Intervals in Laboratory Medicine: A New Model Based on Within-Subject Biological Variation. (external link)
• Pilar Fernández-Calle; Jorge Díaz-Garzón; William Bartlett et al. (2021). Biological variation estimates of thyroid related measurands - Meta-analysis of BIVAC compliant studies. (external link)
• Abdurrahman Coşkun; Anna Carobene; Aasne K. Aarsand et al. (2021). Within- And between-subject biological variation data for serum zinc, copper and selenium obtained from 68 apparently healthy Turkish subjects. (external link)
• Michela Bottani; Aasne Karine Aarsand; Giuseppe Banfi et al. (2021). European Biological Variation Study (EuBIVAS): Within- And between-subject biological variation estimates for serum thyroid biomarkers based on weekly samplings from 91 healthy participants. (external link)
• Kjersti Nøkleby; Tore Julsrud Berg; Ibrahimu Mdala et al. (2021). High adherence to recommended diabetes follow-up procedures by general practitioners is associated with lower estimated cardiovascular risk. (external link)
• Aasne K. Aarsand; Ann-Helen Kristoffersen; Sverre Sandberg et al. (2021). The European Biological Variation Study (EuBIVAS): Biological Variation Data for Coagulation Markers Estimated by a Bayesian Model. (external link)
• Niels Jonker; Berna Aslan; Beatriz Boned et al. (2021). Critical appraisal and meta-analysis of biological variation estimates for kidney related analytes. (external link)
• Jorge Diaz–Garzon; Pilar Fernandez-Calle; Aasne Karine Aarsand et al. (2021). Biological variation of venous acid-base status measurands in athletes. (external link)
• Abdurrahman Coskun; Sverre Sandberg; Ibrahim Unsal et al. (2021). Personalized reference intervals - Statistical approaches and considerations. (external link)
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• Mette Christophersen Tollånes; Anne-Marte Bakken Kran; Eirik Abildsnes et al. (2020). Evaluation of eleven rapid tests for detection of antibodies against SARS-CoV-2. (external link)
• Etienne Cavalier; P. Lukas; M. Bottani et al. (2020). European Biological Variation Study (EuBIVAS): within- and between-subject biological variation estimates of β-isomerized C-terminal telopeptide of type I collagen (β-CTX), N-terminal propeptide of type I collagen (PINP), osteocalcin, intact fibroblast growth factor 23 and uncarboxylated-unphosphorylated matrix-Gla protein—a cooperation between the EFLM Working Group on Biological Variation and the International Osteoporosis Foundation-International Federation of Clinical .... (external link)
• Mette Christophersen Tollånes; Geir E. Sjaastad; Bernt Bøgvald Aarli et al. (2020). Spirometry in chronic obstructive pulmonary disease in Norwegian general practice. (external link)
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• Una Ørvim Sølvik; Elisabet Eriksson Boija; Sara Ekvall et al. (2020). Performance and user-friendliness of the rapid antigen detection tests QuickVue Dipstick Strep A test and DIAQUICK Strep A Blue Dipstick for pharyngotonsillitis caused by Streptococcus pyogenes in primary health care. (external link)
• Ferruccio Ceriotti; Jorge Diaz-Garzon Marco; Pilar Fernandez-Calle et al. (2020). The European Biological Variation Study (EuBIVAS): Weekly biological variation of cardiac troponin i estimated by the use of two different high-sensitivity cardiac troponin i assays. (external link)
• Jorge Díaz-Garzón; Pilar Fernandez-Calle; Aasne Karine Aarsand et al. (2020). Increases in High-Sensitivity Cardiac Troponin I in Athletes during a Long-Term Period of Routine Training Out of Competition. (external link)
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• Carl Michael Baravelli; Aasne Karine Aarsand; Sverre Sandberg et al. (2020). Sick leave, disability, and mortality in acute hepatic porphyria: a nationwide cohort study. (external link)
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• Anh Thi Tran; Tore Julsrud Berg; Bjørn E. Gjelsvik et al. (2019). Ethnic and gender differences in the management of type 2 diabetes: a cross-sectional study from Norwegian general practice.. (external link)
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• Gro Gidske; Kristin Moberg Aakre; Pål Rustad et al. (2019). Handling of hemolyzed serum samples in clinical chemistry laboratories: The Nordic hemolysis project. (external link)
• Ann-Helen Kristoffersen; Per Hyltoft Petersen; Line Bjørge et al. (2019). Concentration of fibrin monomer in pregnancy and during the postpartum period. (external link)
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• Bjørn E. Gjelsvik; Anh Thi Tran; Tore Julsrud Berg et al. (2019). Exploring the relationship between coronary heart disease and type 2 diabetes: a cross-sectional study of secondary prevention among diabetes patients. (external link)
• Åsne Bakke; Ingvild Dalen; Geir Thue et al. (2019). Variation in the achievement of HbA1c, blood pressure and LDL cholesterol targets in type 2 diabetes in general practice and characteristics associated with risk factor control. (external link)
• Una Ørvim Sølvik; Elisabeth Sellevoll Løkkebø; Ann-Helen Kristoffersen et al. (2019). Quality of warfarin therapy and quality of life are improved by self-management for two years. (external link)
• Brenden Chen; Sharon Whatley; Michael Badminton et al. (2019). International Porphyria Molecular Diagnostic Collaborative: an evidence-based database of verified pathogenic and benign variants for the porphyrias. (external link)
• Anna Carobene; Aasne Karine Aarsand; Elena Guerra et al. (2019). European Biological Variation Study (EuBIVAS): Within- and between-subject biological variation data for 15 frequently measured proteins. (external link)
• Marte Høvik Hammersland; Aasne Karine Aarsand; Sverre Sandberg et al. (2019). Self-efficacy and self-management strategies in acute intermittent porphyria. (external link)
• Ann-Helen Kristoffersen; Per Hyltoft Petersen; Line Bjørge et al. (2018). Within-subject biological variation of activated partial thromboplastin time, prothrombin time, fibrinogen, factor VIII and von Willebrand factor in pregnant women. (external link)
• Una Ørvim Sølvik; Aslaug Johanne Risøy; Reidun Lisbet Skeide Kjome et al. (2018). Quality control of Norwegian pharmacy HbA1c testing: a modest beginning. (external link)
• Caroline Schmitt; Hugo Lenglet; Angèle Yu et al. (2018). Recurrent attacks of acute hepatic porphyria: major role of the chronic inflammatory response in the liver. (external link)
• Aasne Karine Aarsand; Jorge Díaz-Garzón; Pilar Fernandez-Calle et al. (2018). The EuBIVAS: Within- and between-subject biological variation data for electrolytes, lipids, urea, uric acid, total protein, total bilirubin, direct bilirubin, and glucose. (external link)
• Per Hyltoft Petersen; Flemming Lund; Callum G. Fraser et al. (2018). Valid analytical performance specifications for combined analytical bias and imprecision for the use of common reference intervals. (external link)
• Aslaug Johanne Risøy; Reidun Lisbet Skeide Kjome; Sverre Sandberg et al. (2018). Risk assessment and HbA1c measurement in Norwegian community pharmacies to identify people with undiagnosed type 2 diabetes ? A feasibility study. (external link)
• Siri Fauli Munkerud; Sverre Grepperud; Sverre Sandberg (2018). Hjemmetjenesten driver omfattende laboratorievirksomhet. (external link)
• Anna Carobene; Elena Guerra; Massimo Locatelli et al. (2018). Biological variation estimates for prostate specific antigen from the European Biological Variation Study; consequences for diagnosis and monitoring of prostate cancer. (external link)
• Phillip J. Monaghan; Sarah Robinson; Daniel Rajdl et al. (2018). Practical guide for identifying unmet clinical needs for biomarkers. (external link)
• Anne Stavelin; Sverre Sandberg (2018). Harmonization activities of Noklus - A quality improvement organization for point-of-care laboratory examinations. (external link)
• Aasne Karine Aarsand; Thomas Røraas; William A. Bartlett et al. (2018). Harmonization initiatives in the generation, reporting and application of biological variation data. (external link)
• Åsne Bakke; Anh Thi Tran; Ingvild Dalen et al. (2018). Population, general practitioner and practice characteristics are associated with screening procedures for microvascular complications in Type 2 diabetes care in Norway. (external link)
• Abdurrahman Coşkun; Anna Carobene; Meltem Kilercik et al. (2018). Within-subject and between-subject biological variation estimates of 21 hematological parameters in 30 healthy subjects. (external link)
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• Åsne Bakke; John Cooper; Geir Thue et al. (2017). Type 2 diabetes in general practice in Norway 2005-2015: moderate improvements in risk factor control, but still major gaps in complication screening. (external link)
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• Anna Carobene; Thomas Røraas; Una Ørvim Sølvik et al. (2017). Biological variation estimates obtained from 91 healthy study participants for 9 enzymes in serum. (external link)
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• Ann-Helen Kristoffersen; Per Hyltoft Petersen; Thomas Røraas et al. (2017). Estimates of within-subject biological variation of protein c, antithrombin, protein s free, protein s activity, and activated protein c resistance in pregnant women. (external link)
• Carl Michael Baravelli; Sverre Sandberg; Aasne Karine Aarsand et al. (2017). Acute hepatic porphyria and cancer risk: a nationwide cohort study. (external link)
• Anna Carobene; Irene Marino; Abdurrahman Coskun et al. (2017). The EuBIVAS project: within- and between-subject biological variation data for serum creatinine using enzymatic and alkaline picrate methods and implications for monitoring. (external link)
• Giuseppe Lippi; Geoffrey S Baird; Giuseppe Banfi et al. (2017). Improving quality in the preanalytical phase through innovation, on behalf of the European Federation for Clinical Chemistry and Laboratory Medicine (EFLM) Working Group for Preanalytical Phase (WG-PRE). (external link)
• Janice Andersen; Karin Nordin; Sverre Sandberg (2016). Illness perception and psychological distress in persons with porphyria cutanea tarda. (external link)
• Tone Bukve; Anne Stavelin; Sverre Sandberg (2016). Effect of participating in a quality improvement system over time for point-of-care c-reactive protein, glucose, and hemoglobin testing. (external link)
• Anne Stavelin; Berit Oddny Riksheim; Nina Gade Christensen et al. (2016). The importance of reagent lot registration in external quality assurance/proficiency testing schemes. (external link)
• Ann-Helen Kristoffersen; Éva Ajzner; Dunja Rogic et al. (2016). Is D-dimer used according to clinical algorithms in the diagnostic work-up of patients with suspicion of venous thromboembolism? A study in six European countries. (external link)
• Thomas Røraas; Bård Støve; Per Hyltoft Petersen et al. (2016). Biological variation: The effect of different distributions on estimated within-person variation and reference change values. (external link)
• Anna Carobene; Marta Strollo; Neils Jonker et al. (2016). Sample collections from healthy volunteers for biological variation estimates' update: A new project undertaken by the Working Group on Biological Variation established by the European Federation of Clinical Chemistry and Laboratory Medicine. (external link)
• Øyvind Skadberg; Sverre Sandberg; Thomas Røraas et al. (2016). The variation in high sensitive cardiac troponin concentration during haemodialysis treatment is not similar to the biological variation observed in stable end stage renal disease patients. (external link)
• Geir Thue; Sverre Sandberg (2015). Analytical performance specifications based on how clinicians use laboratory tests. Experiences from a post-analytical external quality assessment programme. (external link)
• Janice Andersen; Eva Gjengedal; Sverre Sandberg et al. (2015). A skin disease, a blood disease or something in between? : an exploratory focus group study of patients' experiences with porphyria cutanea tarda.. (external link)
• Siri Carlsen; Geir Thue; John Cooper et al. (2015). Benchmarking by HbA1c in a national diabetes quality register - does measurement bias matter?. (external link)
• William A. Bartlett; Federica Braga; Anna Carobene et al. (2015). A checklist for critical appraisal of studies of biological variation. (external link)
• Karianne Fjeld Løvaas; John Cooper; Sverre Sandberg et al. (2015). Feasibility of using self-reported patient data in a national diabetes register. (external link)
• Una Ørvim Sølvik; Elisabeth Sellevoll Løkkebø; Ann-Helen Kristoffersen et al. (2015). Egenkontroll av warfarinbehandling. (external link)
• Tone Bukve; Thomas Røraas; Berit Oddny Riksheim et al. (2015). Point-of-care urine albumin in general practice offices: Effect of participation in an external quality assurance scheme. (external link)
• Éva Ajzner; Dunja Rogic; Piet Meijer et al. (2015). An international study of how laboratories handle and evaluate patient samples after detecting an unexpected APTT prolongation. (external link)
• Andrea Rita Horvath; Patrick M.M. Bossuyt; Sverre Sandberg et al. (2015). Setting analytical performance specifications based on outcome studies - Is it possible?. (external link)
• Wytze P. Oosterhuis; Sverre Sandberg (2015). Proposal for the modification of the conventional model for establishing performance specifications. (external link)
• Andrea R. Horvath; Sarah J. Lord; Andrew St John et al. (2014). From biomarkers to medical tests: The changing landscape of test evaluation. (external link)
• Aasne Karine Aarsand; Sverre Sandberg (2014). How to achieve harmonisation of laboratory testing -The complete picture. (external link)
• Una Ørvim Sølvik; Thomas Røraas; Per Hyltoft Petersen et al. (2014). The influence of coagulation factors on the in-treatment biological variation of international normalized ratio for patients on warfarin. (external link)
• Kristin Aakre; Thomas Helge Røraas; Per Hyltoft Petersen et al. (2014). Weekly and 90-minute biological variations in cardiac troponin T and cardiac troponin I in hemodialysis patients and healthy controls. (external link)
• Mary K. Robinson; Samuel P. Caudill; David D. Koch et al. (2014). Albumin adsorption onto surfaces of urine collection and analysis containers. (external link)
• Sverre Sandberg (2014). Self measurement of glucose – how useful is it and how can it be done. (external link)
• Mira Mykletun; Aasne Karine Aarsand; Egil Støle et al. (2014). Porfyrisykdommer i Norge. (external link)
• Andrea R. Horvath; S. J. Lord; Andrew St John et al. (2014). From biomarkers to medical tests: The changing landscape of test evaluation. (external link)
• Lillan Mo Andreassen; Sverre Sandberg; Gunn Berit Berge Kristensen et al. (2014). Nursing home patients with diabetes: Prevalence, drug treatment and glycemic control. (external link)
• Giuseppe Lippi; Kathleen Becan-McBride; Darina Behúlová et al. (2013). Preanalytical quality improvement: in quality we trust. (external link)
• John Cooper; Tor Claudi; Hrafnkell B Thordarson et al. (2013). Behandlingen av type 1-diabetes i spesialisthelsetjenesten – data fra Norsk diabetesregister for voksne. (external link)
• John Cooper; Geir Thue; Tor Claudi et al. (2013). The Norwegian Diabetes Register for Adults –an overview of the first years. (external link)
• Una Ørvim Sølvik; Thomas Helge Røraas; Nina Gade Christensen et al. (2013). Diagnosing Diabetes Mellitus: Performance of Hemoglobin A(1c) Point-of-Care Instruments in General Practice Offices. (external link)
• George H. Elder; Pauline Harper; Michael Badminton et al. (2013). The incidence of inherited porphyrias in Europe. (external link)
• Helene J. Bustad; Marta Vorland; Eva Rønneseth et al. (2013). Conformational stability and activity analysis of two hydroxymethylbilane synthase mutants, K132N and V215E, with different phenotypic association with acute intermittent porphyria. (external link)
• Anne Stavelin; Per Hyltoft Petersen; Una Ørvim Sølvik et al. (2013). External quality assessment of point-of-care methods: model for combined assessment of method bias and single-participant performance by the use of native patient samples and noncommutable control materials. (external link)
• Anna Carobene; Federica Braga; Thomas Helge Røraas et al. (2013). A systematic review of data on biological variation for alanine aminotransferase, aspartate aminotransferase and gamma-glutamyl transferase. (external link)
• J Watine; W Mokaddem; P Carriere et al. (2013). Heterogeneity in the handling of vitamin-K-antagonists and of INR: the example of Quercy-Rouergue. (external link)
• Anne Lise Bjørke Monsen; Ingrid Kristin Torsvik; Per Magne Ueland et al. (2012). Increased yet iron-restricted erythropoiesis in postpartum mothers. (external link)
• Mette Christophersen Tollånes; Aasne Karine Aarsand; Jørild Haugen Villanger et al. (2012). Establishing a network of specialist Porphyria centres - effects on diagnostic activities and services. (external link)
• Ann-Helen Kristoffersen; Geir Thue; Eva Ajzner et al. (2012). Interpretation and management of INR results: A case history based survey in 13 countries. (external link)
• Una Ørvim Sølvik; Thomas Helge Røraas; Per Hyltoft Petersen et al. (2012). Effect of coagulation factors on discrepancies in International Normalized Ratio results between instruments. (external link)
• Ann-Helen Kristoffersen; Per Hyltoft Petersen; Sverre Sandberg (2012). A model for calculating the within-subject biological variation and likelihood ratios for analytes with a time-dependent change in concentrations; exemplified with the use of D-dimer in suspected venous thromboembolism in healthy pregnant women. (external link)
• Lippi Giuseppe; Kathleen Becan-McBride; Darina Behúlová, et al. (2012). Preanalytical quality improvement: in quality we trust. (external link)
• Kristin Aakre; Wytze P. Oosterhuis; Sverre Sandberg (2012). How do laboratory specialists advise clinicians concerning the use and interpretation of renal tests?. (external link)
• Thomas Helge Røraas; Per Hyltoft Petersen; Sverre Sandberg (2012). Confidence intervals and power calculations for within-person biological variation: effect of analytical imprecision, number of replicates, number of samples, and number of individuals. (external link)
• Anne Stavelin; Piet Meijer; Dianne Kitchen et al. (2012). External quality assessment of point-of-care International Normalized Ratio (INR) testing in Europe. (external link)
• Reidun Lisbet Skeide Kjome; Thomas Helge Røraas; Anne Gerd Granås et al. (2012). Fylkesvise forskjeller i salg av blodglukosestrimler og antidiabetika. (external link)
• Kari Nerhus; Pål Rustad; Sverre Sandberg (2011). Effect of ambient temperature on analytical performance of self-monitoring blood glucose systems. (external link)
• Kristin Aakre; Geir Thue; Einar Svarstad et al. (2011). Laboratory investigation and follow-up of chronic kidney disease stage 3 in primary care. (external link)
• Jens Petter Berg; Kristian Folkvord Hanssen; Kristian S Bjerve et al. (2011). Standardisert hemoglobin A1C til diagnostisk bruk?. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; Callum G. Fraser (2011). Do new concepts for deriving permissible limits for analytical imprecision and bias have any advantages over existing consensus?. (external link)
• Mette Christophersen Tollånes; Aasne Karine Aarsand; Sverre Sandberg (2011). Excess risk of adverse pregnancy outcomes in women with porphyria: a population-based cohort study. (external link)
• Giuseppe Lippi; Jeffrey J. Chance; Stephen Church et al. (2011). Preanalytical quality improvement: from dream to reality. (external link)
• Aasne Karine Aarsand; Jørild Haugen Villanger; Egil Støle et al. (2011). European specialist porphyria laboratories: diagnostic strategies, analytical quality, clinical interpretation, and reporting as assessed by an external quality assurance program. (external link)
• Siri Carlsen; Per Hyltoft Petersen; Svein Skeie et al. (2011). Within-subject biological variation of glucose and HbA(1c) in healthy persons and in type 1 diabetes patients. (external link)
• Geir Thue; Marianne Jevnaker; Guro- Marte Gulstad et al. (2011). Quality assurance of laboratory work and clinical use of laboratory tests in general practice in Norway: A survey. (external link)
• Reidun Lisbet Skeide Kjome; Anne Gerd Granås; Kari Nerhus et al. (2010). The Prevalence of Self-Monitoring of Blood Glucose and Costs of Glucometer Strips in a Nationwide Cohort. (external link)
• Reidun Lisbet Skeide Kjome; Kari Nerhus; Sverre Sandberg (2010). Implementation of a method for glucose measurements in community pharmacies. (external link)
• Una Ørvim Sølvik; Per Hyltoft Petersen; Grete Monsen et al. (2010). Discrepancies in International Normalized Ratio Results between Instruments: A Model to Split the Variation into Subcomponents. (external link)
• Kristin Moberg Aakre; Geir Thue; Sumathi Subramaniam-Håvik et al. (2010). Diagnosing microalbuminuria and consequences for the drug treatment of patients with type 2 diabetes: A European survey in primary care. (external link)
• Reidun Lisbet Skeide Kjome; Anne Gerd Granås; Kari Nerhus et al. (2010). Quality assessment of patients’ self-monitoring of blood glucose in community pharmacies. (external link)
• Aasne Karine Aarsand; Sverre Sandberg (2010). Porfyri: Symptomer - diagnostisering - behandling. (external link)
• Ellen Økland Blinkenberg; Sverre Sandberg; Vidar Martin Steen et al. (2010). Usefulness of factor V Leiden mutation testing in clinical practice. (external link)
• Aasne K. Aarsand; Helge Boman; Sverre Sandberg (2009). Familial and sporadic porphyria cutanea tarda: characterization and diagnostic strategies. (external link)
• Per Hyltoft Petersen; Nina Gade Christensen; Sverre Sandberg et al. (2009). How to deal with semi-quantitative tests? Application of an ordinal scale model to measurements of urine glucose. (external link)
• John Cooper; Tor Claudi; Anne Karen Jenum et al. (2009). Quality of Care for Patients With Type 2 Diabetes in Primary Care in Norway Is Improving Results of cross-sectional surveys of 33 general practices in 1995 and 2005. (external link)
• Aasne Karine Aarsand; Helge Boman; Sverre Sandberg (2009). Familial and sporadic porphyria cutanea tarda: Characterization and diagnostic strategies. (external link)
• Anne Stavelin; Per Hyltoft Petersen; Una Øvrim Sølvik et al. (2009). Internal quality control of prothrombin time in primary care: comparing the use of patient split samples with lyophilised control materials. (external link)
• Gunn Berit Berge Kristensen; Grete Monsen; Svein Skeie et al. (2008). Standardized Evaluation of Nine Instruments for Self-Monitoring of Blood Glucose. (external link)
• Per Hyltoft Petersen; Nina Gade Christensen; Sverre Sandberg et al. (2008). How to deal with dichotomous tests? Application of a rankit ordinal scale model with examples from the Nordic ordinal scale project on screening tests. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; Natàlia Iglesias et al. (2008). 'Likelihood-ratio' and 'odds' applied to monitoring of patients as a supplement to 'reference change value' (RCV). (external link)
• Kristin M. Aakre; Geir Thue; Sumathi Subramaniam-Håvik et al. (2008). Postanalytical external quality assessment of urine albumin in primary health care: An international survey. (external link)
• Anne Lise Bjørke Monsen; Roar Gjelsvik; Oddvar Martin Kaarbøe et al. (2008). Riktigere bruk av laboratorietjenester – medisinske aspekter. (external link)
• Roar Gjelsvik; Oddvar Martin Kaarbøe; Hanne Husom Haukland et al. (2008). Riktigere bruk av laboratorietjenester – økonomiske aspekter. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; N Iglesias et al. (2008). Opinion Paper: 'Likelihood-ratio' and 'odds' applied to monitoring of patients as a supplement to 'reference change value' (RCV).. (external link)
• Reidun Lisbet Skeide Kjome; Sverre Sandberg; Anne Gerd Granås (2008). Diabetes care in Norwegian pharmacies: a descriptive study. (external link)
• Ann-Helen Kristoffersen; Geir Thue; Sverre Sandberg (2006). Postanalytical external quality assessment of warfarin monitoring in primary healthcare. (external link)
• Gunn Berit Berge Kristensen; Kari Nerhus; Geir Thue et al. (2006). Results and feasibility of an external quality assessment scheme for self-monitoring of blood glucose. (external link)
• Wenche Iren Bjelkarøy; Sverre Sandberg; Geir Thue et al. (2006). Vurdering av urindyppekultur i primærhelsetjenesten. (external link)
• Aasne K. Aarsand; Per Hyltoft Petersen; Sverre Sandberg (2006). Estimation and application of biological variation of urinary delta-aminolevulinic acid and porphobilinogen in healthy individuals and in patients with acute intermittent porphyria. (external link)
• Ellen van Berkel; Nick Boley; Steve Ellison et al. (2006). Proficiency testing in analytical chemistry, microbiology and laboratory medicine - working group discussions on current status, problems and future directions. (external link)
• Una Øvrim Sølvik; Anne Stavelin; Nina Gade Christensen et al. (2006). External quality assessment of prothrombin time: The split-sample model compared with external quality assessment with commercial control material. (external link)
• Aasne Karine Aarsand; Per Hyltoft Petersen; Sverre Sandberg (2006). Estimation and Application of Biological Variation of Urinary δ-Aminolevulinic Acid and Porphobilinogen in Healthy Individuals and in Patients with Acute Intermittent Porphyria.. (external link)
• Ann-Helen Kristoffersen; Geir Thue; Sverre Sandberg (2006). Postanalytical external quality assessment of warfarin monitoring in primary healthcare. (external link)
• Torleif Trydal; Bjørn Bolann; Frank Roger Brosstad et al. (2005). Analyse av protrombintid i primærhelsetjenesten. (external link)
• Gunn B.B. Kristensen; Nina Gade Christensen; Geir Thue et al. (2005). Between-lot variation in external quality assessment of glucose: Clinical importance and effect on participant performance evaluation. (external link)
• Torleif Trydal; Bjørn Johan Bolann; Frank Brosstad et al. (2005). Analyse av protrombintid i primærhelsetjenesten. (external link)
• Svein Skeie; C Perich; C Ricos et al. (2005). Postanalytical external quality assessment of blood glucose and hemoglobin A(1c): An international survey. (external link)
• Aasne Karine Aarsand; Sverre Sandberg (2005). Porphyrias, a challenge for diagnostic assessment and treatment.. (external link)
• Bjørn Johan Bolann; Geir Thue; Sverre Sandberg (2004). Urine analysis and decision-making on cystitis in general practice. (external link)
• WP Oosterhuis; DE Bruns; J Watine et al. (2004). Evidence-based guidelines in laboratory medicine: Principles and methods. (external link)
• G Nordin; A Martensson; B Swolin et al. (2004). A multicentre study of reference intervals for haemoglobin, basic blood cell counts and erythrocyte indices in the adult population of the Nordic countries. (external link)
• IN Norderhaug; T Wisloff; S Fossa et al. (2004). Prostrate-specific antigen and prostate cancer: General practitioners' and urologists' use of evidence-based information. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; Nina Gade Christensen et al. (2004). Basic model and preliminary results on a Nordfond project on measurements reported on an ordinal scale. (external link)
• I.N. Norderhaug; Sophie D. Fosså; F. Forland et al. (2003). Health technology assessment and implications for clinical practice: The case of prostate cancer screening. (external link)
• BJ Bolann; Sverre Sandberg (2003). Evaluation of new laboratory tests. (external link)
• Per Hyltoft Petersen; L Jørgensen; E Jensen et al. (2003). Er GUM skadelig - eller blot overflødig?. (external link)
• Bjørn Johan Bolann; Sverre Sandberg (2003). Evaluering av nye laboratorieanalyser. (external link)
• Kjersti Tjensvoll; Ove Bruland; Ylva Floderus et al. (2003). Haplotype analysis of Norwegian and Swedish patients with acute intermittent porphyria (AIP): Extreme haplotype heterogeneity for the mutation R116W. (external link)
• Øyvind Skadberg; Atle Brun; Sverre Sandberg (2003). Human reticulocytes isolated from peripheral blood: maturation time and hemoglobin synthesis. (external link)
• Svein Skeie; Geir Thue; Kari Nerhus et al. (2002). Instruments for self-monitoring of blood-glucose: comparison of testing quality achieved by patients and a technician. (external link)
• Per Hyltoft Petersen; D Stockl; JO Westgard et al. (2001). Models for combining random and systematic errors, assumptions and consequences for different models. (external link)
• Sverre Sandberg; A Brun; O Skadberg et al. (2001). Akutt intermitterende porfyri er en vanskelig diagnose - spesielt hos barn. (external link)
• Sverre Sandberg (2001). Analyse av protrombintid i primærhelsetjenesten. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; CG Fraser et al. (2001). Influence of index of individuality on false positives in repeated sampling from healthy individuals. (external link)
• Svein Skeie; Geir Thue; Sverre Sandberg (2001). Interpretation of hemaglobin A(1c)(HbA(1c)) values among diabetic patients: implications for quality specifications for HbA(1c). (external link)
• Geir Thue; Atle Klovning; Sverre Sandberg (2001). External quality assessment of general practice laboratories: organizational issues and interpretation of feedback reports. (external link)
• KJ Skurtveit; Wenche Iren Bjelkarøy; Nina Gade Christensen et al. (2001). Quality of rapid tests for determination of infectious mononucleosis. (external link)
• Svein Skeie; Geir Thue; Sverre Sandberg (2001). Patient-derived quality specifications for instruments used in self-monitoring of blood glucose. (external link)
• M Aune; Sverre Sandberg (2000). Automated counting of white and red blood cells in the cerebrospinal fluid. (external link)
• A Brock; Sverre Sandberg (2000). Porphyrins and Porphyrias. Review and special articles from the Nordic countries. (Spesialnummer). (external link)
• Signe Flottorp; AD Oxman; JG Cooper et al. (2000). Retningslinjer for diagnostikk og behandling av akutte vannlatingsplager hos kvinner. (external link)
• Signe Flottorp; AD Oxman; JG Cooper et al. (2000). Retningslinjer for diagnostikk og behandling av sår hals. (external link)
• AD Oxman; Signe Flottorp; JG Cooper et al. (2000). Nivået på dokumentasjonen og styrken på anbefalingene i kliniske retningslinjer. (external link)
• TM Eggebo; Eli Smedvig; GF Zanussi et al. (2000). Foster med hydrops hos kvinne fra Vietnam. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; CG Fraser et al. (2000). A model for setting analytical quality specifications and design of control for measurements on the ordinal scale. (external link)
• M Aune; Sverre Sandberg (2000). Automated counting of white and red blood cells in the cerebrospinal fluid. (external link)
• Sverre Sandberg (2000). Kan laboratoriesvaret få konsekvenser for pasienten?. (external link)
• S Skeie; Geir Thue; Sverre Sandberg (2000). Use and interpretation og HbA1c-testing in general practice. Implications for quality of care. (external link)
• Signe Flottorp; AD Oxman; JG Cooper et al. (2000). Retningslinjer for diagnostikk og behandling av sår hals. (external link)
• Sverre Sandberg (2000). Kan laboratoriesvaret få konsekvenser for pasienten?. (external link)
• Signe Flottorp; AD Oxman; JG Cooper et al. (2000). Retningslinjer for diagnostikk og behandling av sår hals. (external link)
• Sverre Sandberg (2000). Nodelling an estimation of measurement error. (external link)
• Signe Flottorp; AD Oxman; JG Cooper et al. (2000). Retningslinjer for diagnostikk og behandling av akutte vannlatingsplager hos kvinner. (external link)
• Signe Flottorp; AD Oxman; JG Cooper et al. (2000). Retningslinjer for diagnostikk og behandling av sår hals. (external link)
• AD Oxman; Signe Flottorp; JG Cooper et al. (2000). Nivået på dokumentasjonen og styrken på anbefalingene i kliniske retningslinjer. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; CG Fraser et al. (2000). A model for setting analytical quality specifications and design of control for measurements on the ordinal scale. (external link)
• A Brock; Sverre Sandberg (2000). Porphyrins and Porphyrias. Review and special articles from the Nordic countries. (Spesialnummer). (external link)
• TM Eggebo; E Smedvig; GF Zanussi et al. (2000). Foster med hydrops hos kvinne fra Vietnam. (external link)
• Svein Skeie; Geir Thue; Sverre Sandberg (2000). Use and interpretation og HbA1c-testing in general practice. Implications for quality of care. (external link)
• Jenny Foss Abrahamsen; Robert Sothern; Sverre Sandberg et al. (1999). Circadian Variations in Human Peripheral Blood on Days With and Without Bone Marrow Sampling and Relation to Bone Marrow Cell Proliferation. (external link)
• Jenny Foss Abrahamsen; R.B Sothern; Sverre Sandberg et al. (1999). Circadian variations in human peripheral blood on days with and witout bone marrow sampling and relation to bone marroe cell proliferation. (external link)
• G Hølleland; Sverre Sandberg (1999). Bruk og tolking av serum-kalsiumanalyse. (external link)
• Sverre Sandberg; Geir Thue (1999). External quality assurance of test requesting and test interpretation. (external link)
• Per Hyltoft Petersen; CG Fraser; Sverre Sandberg et al. (1999). The index of individuality is often a misinterpreted quantity characteristic. (external link)
• Jenny Foss Abrahamsen; RB Sothern; Sverre Sandberg et al. (1999). Circadian variation in human peripheral blood on days with and without bone marrow sampling and relation to bone marrow proliferation. (external link)
• G Holleland; Jørn Schneede; Per Magne Ueland et al. (1999). Cobalamin deficiency in general practice. Assessment of the diagnostic utility and cost-benefit analysis of methylmalonic acid determination in relation to current diagnostic strategies. (external link)
• G Holleland; Jørn Schneede; Per Magne Ueland et al. (1999). Cobalamin deficiency in general practice. Assessment of the diagnostic utility and cost-benefit analysis of methylmalonic acid determination in relation to current diagnostic strategies. (external link)
• Sverre Sandberg (1999). Measurement error and laboratory medicine. (external link)
• Sverre Sandberg (1999). External quality assurance of test requesting and test interpretations in general practice. A method for developing quality goals from clinicians' opinion and to implement guidelines. (external link)
• Sverre Sandberg; K Hellsing; Per Magnus Jørgensen et al. (1999). Skandinavisk utprøving av laboratorieutstyr for primærhelsetjenesten. Etablering av SKUP og igangsetting av de første evalueringene. (external link)
• Sverre Sandberg; Geir Thue (1999). Quality specifications based upon objective analyses based upon clinical needs. (external link)
• Sverre Sandberg (1999). Oppslagsbok i laboratoriemedisin. (external link)
• Gro Gidske; Nina Gade Christensen; Marianne Jevnaker et al. (1998). Resultater fra NOKLUS' utsendelser 1993-97. (external link)
• JA Stakkestad; Sverre Sandberg; Kristian S Bjerve et al. (1997). Use and usefullness of laboratory handbooks. (external link)
• J.A Stakkestad; Sverre Sandberg; K.S. Bjerve et al. (1997). Use and usefulnes of laboratory handbooks. (external link)
• Sverre Sandberg; K Hellsing; PJ Jørgensen et al. (1997). SKUP - Skandinavisk samarbeid om utprøving av laboratorieutstyr for primærhelsetjenesten. (external link)
• Sverre Sandberg (1997). Systematic review of diagnostic tests. (external link)
• Sverre Sandberg (1997). Systematic reviews of diagnostic tests - a new challenge for laboratory medicine. (external link)
• M Rynning; Sverre Sandberg; M Økland (1997). Etablering av referanseverdier. (external link)
• Sverre Sandberg (1997). Systematic review of diagnostic tests. (external link)
• JA Stakkestad; Sverre Sandberg; KS Bjerve et al. (1997). Use and usefulnes of laboratory handbooks. (external link)
• M Rynning; Sverre Sandberg; M Økland (1997). Etablering av referanseverdier. (external link)
• Sverre Sandberg (1997). Systematic reviews of diagnostic tests - a new challenge for laboratory medicine. (external link)
• Sverre Sandberg; K Hellsing; PJ Jørgensen et al. (1997). SKUP - Skandinavisk samarbeid om utprøving av laboratorieutstyr for primærhelsetjenesten. (external link)
• Sverre Sandberg; W. Oosterhuis; D. Freedman et al. (1997). Systematic reviewing in laboratory medicine. (external link)
• Atle Brun; H. Steen; Sverre Sandberg (1996). Erythropoietic, protoporphyria: two populations of reticulocytes, with and without protoporphyrin. (external link)
• Sverre Sandberg; Nina Gade Christensen; Marianne Jevnaker et al. (1996). Analysekvalitet av hemoglobin og glukose i allmennpraksis. (external link)
• Rune Småland; R. Sother; K. Lote et al. (1995). Circadian phase relationship between peripheral blood variables and bone marrow proliferative activity in clinical health. (external link)
• Rune Småland; RB Sothern; K Lote et al. (1995). Circadian phase relationships between peripheral blood variables and bone marrow proliferative activity in clinical health. (external link)
• Rune Småland; RB Sothern; K Lote et al. (1995). Circadian phase relationships between peripheral blood variables and bone marrow proliferative activity in clinical health. (external link)

Academic book chapter

• Janice Andersen; Sverre Sandberg; Målfrid Råheim et al. (2011). Psychosocial aspects of predictive genetic testing for acute intermittent porphyria in Norwegian minors. (external link)
• Atle Klovning; Sverre Sandberg (2007). Searching the Literature and Relevant databases. (external link)
• Anne Karin Aarsand; D Alter; SJ Frost et al. (2007). Diagnosis and Management of Diabetes Mellitus. (external link)
• Aasne Karine Aarsand; D Alter; SJ Frost et al. (2006). Diagnosis and management of diabetes mellitus. (external link)
• Atle Klovning; Sverre Sandberg (2003). Searching the Literature and Relevant databases. (external link)
• Sverre Sandberg (2000). De forundelige porfyrier - en utfordring for diagnostikk og behandling. (external link)
• Sverre Sandberg (2000). De forundelige porfyrier - en utfordring for diagnostikk og behandling. (external link)

Academic literature review

• S.J. Lord; A.R. Horvath; Sverre Sandberg et al. (2025). Is this test fit-for-purpose? Principles and a checklist for evaluating the clinical performance of a test in the new era of in vitro diagnostic (IVD) regulation. (external link)
• Aasne Karine Aarsand; Jordi To-Figueras; Sharon Whatley et al. (2024). Practical recommendations for biochemical and genetic diagnosis of the porphyrias. (external link)
• Andrea Rita Horvath; Katy J.L. Bell; Ferruccio Ceriotti et al. (2024). Outcome-based analytical performance specifications: current status and future challenges. (external link)
• Michael N. Badminton; Karl E. Anderson; Jean-Charles Deybach et al. (2024). From chemistry to genomics: A concise history of the porphyrias. (external link)
• Anne Stavelin; Sverre Sandberg (2023). Analytical performance specifications and quality assurance of point-of-care testing in primary healthcare. (external link)
• Sverre Sandberg; Anna Carobene; Bill Bartlett et al. (2022). Biological variation: recent development and future challenges. (external link)
• Abdurrahman Coskun; Sverre Sandberg; Ibrahim Unsal et al. (2022). Personalized reference intervals: from theory to practice. (external link)
• Fernando Marques-Garcia; Beatriz Boned; Elisabet González-Lao et al. (2022). Critical review and meta-analysis of biological variation estimates for tumor markers. (external link)
• Anna Carobene; Aasne Karine Aarsand; William A. Bartlett et al. (2021). The European Biological Variation Study (EuBIVAS): A summary report. (external link)
• Tze Ping Loh; Alison F. Smith; Katy J.L. Bell et al. (2021). Setting analytical performance specifications using HbA1c as a model measurand. (external link)
• Helene J. Bustad; Juha Pekka Kallio; Marta Vorland et al. (2021). Acute intermittent porphyria: An overview of therapy developments and future perspectives focusing on stabilisation of HMBS and proteostasis regulators. (external link)
• Jorge Díaz-Garzón; Pilar Fernandez-Calle; Sverre Sandberg et al. (2021). Biological variation of cardiac troponins in health and disease: A systematic review and meta-analysis. (external link)
• Niels Jonker; Berna Aslan; Beatriz Boned et al. (2020). Critical appraisal and meta-analysis of biological variation estimates for kidney related analytes. (external link)
• Carmen Ricós; Pilar Fernández-Calle; Elisabet Gonzalez-Lao et al. (2020). Evaluación crítica y meta-Análisis de estudios de variación biológica para albúmina glicosilada, glucosa y HbA<inf>1c</inf>. (external link)
• Abdurrahman Coskun; Federica Braga; Anna Carobene et al. (2019). Systematic review and meta-analysis of within-subject and between-subject biological variation estimates of 20 haematological parameters. (external link)
• Elisabet González-Lao; Zoraida Corte; Margarita Simón et al. (2019). Systematic review of the biological variation data for diabetes related analytes. (external link)
• Jorge Díaz-Garzón; Pilar Fernández-Calle; Joana Minchinela et al. (2019). Biological variation data for lipid cardiovascular risk assessment biomarkers. A systematic review applying the biological variation data critical appraisal checklist (BIVAC). (external link)
• Ferruccio Ceriotti; Pilar Fernandez-Calle; George G. Klee et al. (2017). Criteria for assigning laboratory measurands to models for analytical performance specifications defined in the 1st EFLM Strategic Conference. (external link)
• Anne Stavelin; Sverre Sandberg (2017). Essential aspects of external quality assurance for point-of-care testing. (external link)
• Gunn Berit Berge Kristensen; Kristin Aakre; Ann-Helen Kristoffersen et al. (2014). How to conduct External Quality Assessment Schemes for the pre-analytical phase?. (external link)
• Rosy Tirimacco; George Koumantakis; Rajiv Erasmus et al. (2013). Glucose meters - fit for clinical purpose. (external link)
• Kristin Aakre; Joseph Watine; Peter S. Bunting et al. (2012). Self-monitoring of blood glucose in patients with diabetes who do not use insulinuare guidelines evidence-based?. (external link)
• Gunn Berit Berge Kristensen; Sverre Sandberg (2010). Self-monitoring of blood glucose with a focus on analytical quality: an overview. (external link)
• W Greg Miller; David E. Bruns; Glen L Hortin et al. (2009). Current Issues in Measurement and Reporting of Urinary Albumin Excretion. (external link)
• Nathalie Schneider; Kristin Moberg Aakre; Geir Thue et al. (2009). Evaluation of prescription and interpretation of microalbuminuria by general practitioners. (external link)

Conference abstract

• Andrea R. Horvath; Sverre Sandberg; Marc H.M. Thelen et al. (2026). Model 1b analytical performance specifications - Report on the Prague 2025 workshop. (external link)
• Tomáš Zima; Mario Plebani; Sverre Sandberg et al. (2026). Laboratory Medicine for Society. (external link)
• Anders Kuvaas Herting; Prabhjot Kour; Sverre Sandberg et al. (2025). 187 Difficulties advising non-native speakers and older adults after point-of-care testing. (external link)
• Sverre Sandberg (2014). POC testing instruments for diagnosing and monitoring diabetes in clinical settings. (external link)
• Helene J. Bustad; K Toska; Sverre Sandberg et al. (2013). Searching for pharmacological chaperones aiding to stabilize hydroxymethylbilane synthase. (external link)
• Sverre Sandberg (2011). Optimizing porphyria diagnostics with emphasis on pre-analytical, analytical and postanalytical aspects S. Sandberg on behalf of EPNET. (external link)
• Janice Andersen; Sverre Sandberg; Målfrid Råheim et al. (2011). Psychosocial aspects of predictive genetic testing for acute intermittent porphyria in minors. (external link)
• Sverre Sandberg (2011). POST-ANALYTICAL EXTERNAL QUALITY ASSESSMENT - A WAY TO ASSESS TEST REQUESTING AND INTERPRETATION. (external link)
• Helene Bustad Johannessen; E Rxnneseth; Jarl Underhaug et al. (2010). CHARACTERIZATION OF THE MOLECULAR BASIS OF ACUTE INTERMITTENT PORPHYRIA. (external link)
• Helene J. Bustad; Eva Rønneseth; Karen Toska et al. (2010). Characterization of the molecular basis of acute intermittent porphyria. (external link)
• Gunn B.B. Kristensen; Nina Gade Christensen; Geir Thue et al. (2005). Between lot variation in external quality assessment of glucose: Clinical importance and effect on the evaluation of participants' performance. (external link)
• R Onody; A Araczki; Svein Skeie et al. (2005). Can we interpret laboratory results correctly?. (external link)
• Una Øvrim Sølvik; Anne Stavelin; Nina Gade Christensen et al. (2005). External quality assessments of whole blood prothrombin time: Comparison of two methods. (external link)

Conference lecture

• Åsne Bakke; John Cooper; Geir Thue et al. (2017). Type 2 diabetes in General Practice in Norway 2005-2014: Moderate improvements in risk Control but still major gaps in complication screening. (external link)
• Reidun Lisbet Skeide Kjome; Anne Gerd Granås; Kari Nerhus et al. (2007). Control of patients' glucometers and SMBG technique in community pharmacies. (external link)
• Per Hyltoft Petersen; Sverre Sandberg; Nina Gade Christensen (2006). How to deal with qualitative tests? Principles. (external link)
• Bjørn Johan Bolann; Geir Thue; Sverre Sandberg (2004). Hvordan bruker legene urinstrimmelen til diagnostikk av UVI?. (external link)

Conference poster

• Anh Thi Tran; Bjørn E. Gjelsvik; Tore Julsrud Berg et al. (2018). The influences of ethnicity on the quality of type 2 diabetes care in Norwegian general practice. (external link)
• Åsne Bakke; John Cooper; Geir Thue et al. (2017). Type 2 Diabetes in General Practice in Norway 2005-2014: Moderate improvements in risk factor control but still major gaps in complication screening.. (external link)
• Aslaug Johanne Risøy; Reidun Lisbet Skeide Kjome; Sverre Sandberg et al. (2016). A feasibility study for risk assessment ofType 2 Diabetes (T2D) in pharmacies. (external link)
• Reidun Lisbet Skeide Kjome; Anne Gerd Granås; Kari Nerhus et al. (2007). Control of Self-Monitoring of Blood Glucose in Community Pharmacies. (external link)

Doctoral thesis (PhD)

• Lillan Mo Andreassen; Reidun Lisbet Skeide Kjome; Sverre Sandberg et al. (2019). Diabetes in care homes : Special emphasis on medicines and blood glucose measurements. (external link)
• Thomas Røraas; Sverre Sandberg (2017). Estimating Biological Variation. Methodological and Statistical Aspects. (external link)
• Helene Bustad Johannessen; Sverre Sandberg (2016). Characterization of Hydroxymethylbilane Synthase and Pharmacological Chaperone Treatment for Acute Intermittent Porphyria. (external link)
• Janice Andersen; Sverre Sandberg (2016). A patient-oriented perspective on porphyria. Psychosocial and health-related challenges of acute intermittent porphyria and porphyria cutanea tarda. (external link)
• Siri Carlsen; Sverre Sandberg (2016). The use of HbA1c as a quality indicator in diabetes care - analytical and clinical aspects. (external link)
• Sverre Sandberg (1982). Porphyrin-induced photodamage at the cellular and the sub- cellular level. (external link)

Editorial/Leader article

• Sverre Sandberg; Tomas Zima; Mauro Panteghini (2024). Analytical performance specifications - moving from models to practical recommendations. (external link)
• Sverre Sandberg; Anna Carobene; Aasne Karine Aarsand (2022). Biological variation - eight years after the 1st Strategic Conference of EFLM. (external link)
• Mauro Panteghini; Sverre Sandberg (2016). Total error vs. measurement uncertainty: The match continues. (external link)
• Mauro Panteghini; Sverre Sandberg (2015). Defining analytical performance specifications 15 years after the Stockholm conference. (external link)
• Sverre Sandberg; Callum G. Fraser; Andrea Rita Horvath et al. (2015). Defining analytical performance specifications: Consensus Statement from the 1st Strategic Conference of the European Federation of Clinical Chemistry and Laboratory Medicine. (external link)
• Aasne Karine Aarsand; Thomas Røraas; Sverre Sandberg (2015). Biological variation-reliable data is essential. (external link)
• Kristin Moberg Aakre; Sverre Sandberg (2010). Can changes in troponin results be useful in diagnosing myocardial infarction?. (external link)
• Sverre Sandberg (2001). Nasjonalt Kompetansesenter for porfyrisykdommer. (external link)
• Sverre Sandberg; A Brock (2000). Porphyrins and Porphyrias. (external link)

Journal corrigendum

• Outi Itkonen; Niels Jonker; Aasne Karine Aarsand et al. (2024). Corrigendum to “The European biological variation study (EuBIVAS): Biological variation data for testosterone, follicle stimulating hormone, prolactin, luteinizing hormone and dehydroepiandrosterone sulfate in men” [Clin. Chim. Acta 555 (2024) 117806] (Clinica Chimica Acta (2024) 555, (S0009898124000470), (10.1016/j.cca.2024.117806)). (external link)
• Carl Michael Baravelli; Aasne Karine Aarsand; Sverre Sandberg et al. (2022). Correction: Porphyria cutanea tarda and patterns of long-term sick leave and disability pension: a 24-year nationwide matched-cohort study (Orphanet Journal of Rare Diseases, (2022), 17, 1, (72), 10.1186/s13023-022-02201-3). (external link)

Letter to the editor

• Tony Badrick; Ashley Beasley-Green; Christa M. Cobbaert et al. (2026). Result harmonization in medical laboratories: accomplishments and challenges. (external link)
• Martine J. Hollestelle; Ann-Helen Kristoffersen; René N. Idema et al. (2025). Short-term biological variation of coagulation and fibrinolytic measurands. (external link)
• Abdurrahman Coskun; Sverre Sandberg; Ibrahim Unsal et al. (2022). Personalized reference intervals: Using estimates of within-subject or within-person biological variation requires different statistical approaches. (external link)
• Anna Carobene; Aasne Karine Aarsand; Abdurrahman Coşkun et al. (2022). Biological variation of serum iron from the European biological variation study (EuBIVAS). (external link)
• Anna Carobene; Elisabet Gonzalez Lao; Margarita Simón et al. (2021). Biological variation of serum insulin: Updated estimates from the European Biological Variation Study (EuBIVAS) and meta-analysis. (external link)
• Abdurrahman Coşkun; Aasne Karine Aarsand; Federica Braga et al. (2021). Systematic review and meta-analysis of within-subject and between-subject biological variation estimates of serum Zinc, Copper and Selenium. (external link)
• Anna Carobene; Elena Guerra; Fernando Marqués-García et al. (2020). Biological variation of morning serum cortisol: Updated estimates from the European biological variation study (EuBIVAS) and meta-analysis. (external link)
• Anna Carobene; Elena Guerra; Massimo Locatelli et al. (2018). Providing Correct Estimates of Biological Variation—Not an Easy Task. The Example of S100-β Protein and Neuron-Specific Enolase. (external link)
• Lutz Schwettmann; Jens Petter Berg; Sverre Sandberg (2018). HbA1c skal angis i mmol/mol. (external link)
• Gro Gidske; Una Ørvim Sølvik; Sverre Sandberg et al. (2018). Hemolysis interference studies: Freeze method should be used in the preparation of hemolyzed samples. (external link)
• Mauro Panteghini; Khosrow Adeli; Ferruccio Ceriotti et al. (2017). American liver guidelines and cutoffs for "normal" ALT: A potential for overdiagnosis. (external link)
• Ann-Helen Kristoffersen; Eva Ajzner; Josep Miquel Bauça et al. (2017). Pre- and post-test probabilities of venous thromboembolism and diagnostic accuracy of D-dimer, estimated by European clinicians working in emergency departments. (external link)
• Una Ørvim Sølvik; Marianne Risa; Camilla Eide Jacobsen et al. (2015). Performance of 10 systems for self-monitoring of blood glucose by trained healthcare professionals and in the hands of the users. (external link)
• Erna Lenters-Westra; Thomas Røraas; Roger K. Schindhelm et al. (2014). Biological Variation of Hemoglobin A1c: Consequences for Diagnosing Diabetes Mellitus. (external link)
• Kristin Aakre; Thomas Helge Røraas; Per Hyltoft Petersen et al. (2013). Week-to-Week Biological Variation in the N-terminal Prohormone of Brain Natriuretic Peptide in Hemodialysis Patients and Healthy Individuals. (external link)
• Sofie K Van Houcke; Pål Rustad; Hedwig Stepman et al. (2012). Calcium, Magnesium, Albumin, and Total Protein Measurement in Serum as Assessed with 20 Fresh-Frozen Single-Donation Sera. (external link)
• Sverre Sandberg; Janecke Thesen; Gisle Roksund et al. (2010). Medisinsk utstyr på legekontor bør kvalitetssikres :. (external link)
• Philip Richard Webber; Aasne Karine Aarsand; Arne Kristian Sandvik et al. (2010). Acute porphyrias may be overlooked in patients taking methenamine hippurate. (external link)
• Roar Gjelsvik; Oddvar Martin Kaarbøe; Hanne Husom Haukland et al. (2008). Hvordan kan bruk av laboratorietjenester styres?. (external link)
• Una Øvrim Sølvik; Anne Stavelin; Nina Gade Christensen et al. (2007). Response to Kitchen et al.'s external quality assessment of prothrombin time: The split-sample model compared to external quality assessment with commercial control material. (external link)
• Gunn Berit Berge Kristensen; Kari Nerhus; Geir Thue et al. (2004). Standardized evaluation of instruments for self-monitoring of blood glucose by patiens and a technologist. (external link)

Master’s thesis

• Anne Elisabeth Solsvik; Sverre Sandberg; Marthe W. Aune (2009). Postanalytisk kvalitetssikring i hematologi. Hvordan brukes informasjon fra ulike hematologisystemer?. (external link)

Media feature article

• Matthias Orth; Erik Vollebregt; Tomaso Trenti et al. (2023). Direct-To-consumer laboratory testing (DTCT): Challenges and implications for specialists in laboratory medicine. (external link)
• Sverre Sandberg (2000). Modelling an estimation of measurement error. Michele Neuilly, Lavoisier Publishing, Paris, 1999. No. of pages: x+694. Price: £119.50. ISBN 1-898298-59-9. (external link)
• Sverre Sandberg; A Brock (2000). Porphyrins and Porphyrias. (external link)

Non-fiction book chapter

• Steinar Hunskaar; Guri Rørtveit; Jørund Straand et al. (2013). Allmennmedisinske rammer og arbeidsteknikker (kap 1.2). (external link)
• Aasne Karine Aarsand; Sverre Sandberg (2011). Utredning av porfyrisykdommer. (external link)

Non-fiction monograph

• V Helander; Sverre Sandberg (1997). Festskrift til Krister Stàhlberg 50 år. (external link)
• Nina Gade Christensen; G Monsen; Sverre Sandberg (1997). Utprøving av analyseinstrumenter. En veiledning spesielt beregnet for utprøving av instrumenter for primærhelsetjenesten. (external link)
• Nina Gade Christensen; G Monsen; Sverre Sandberg (1997). Utprøving av analyseinstrumenter. En veiledning spesielt beregnet for utprøving av instrumenter for primærhelsetjenesten. (external link)
• R. Kendall; Sverre Sandberg; G. dOnofrio et al. (1996). Reticulocytes: Methods and clinical applications. (external link)

Research report

• Oddvar Martin Kaarbøe; Roar Gjelsvik; Sverre Sandberg et al. (2005). Riktigere bruk av laboratorietjenester. (external link)

See a complete overview of publications in NVA.