Academic article
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W. Greg Miller; Liesbet Deprez; Sverre Sandberg
et al. (2026). Demonstrating commutability of an existing certified reference material for use with an end-user measurement procedure that was not included in the original commutability assessment. (external link)
-
Ann-Helen Kristoffersen; Geir Thue; Sverre Sandberg
(2006). Postanalytical external quality assessment of warfarin monitoring in primary healthcare. (external link)
-
Bjørn Johan Bolann; Geir Thue; Sverre Sandberg
(2004). Urine analysis and decision-making on cystitis in general practice. (external link)
-
Wytze P. Oosterhuis; Hassan Bayat; David Armbruster
et al. (2017). The use of error and uncertainty methods in the medical laboratory. (external link)
-
Wenche Iren Bjelkarøy; Sverre Sandberg; Geir Thue
et al. (2006). Vurdering av urindyppekultur i primærhelsetjenesten. (external link)
-
Sarah J. Lord; Andrew St John; Patrick M.M. Bossuyt
et al. (2019). Setting clinical performance specifications to develop and evaluate biomarkers for clinical use. (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)
-
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)
-
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)
-
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)
-
Siri Carlsen; Geir Thue; John Cooper
et al. (2015). Benchmarking by HbA1c in a national diabetes quality register - does measurement bias matter?. (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)
-
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)
-
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)
-
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)
-
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)
-
Anne Stavelin; Kristine Flesche; Mette Christophersen Tollånes
et al. (2020). Performance of Afinion HbA1c measurements in general practice as judged by external quality assurance data. (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)
-
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)
-
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)
-
Lippi Giuseppe; Kathleen Becan-McBride; Darina Behúlová,
et al. (2012). Preanalytical quality improvement: in quality we trust. (external link)
-
Jens Petter Berg; Kristian Folkvord Hanssen; Kristian S Bjerve
et al. (2011). Standardisert hemoglobin A1C til diagnostisk bruk?. (external link)
-
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)
-
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)
-
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 akutte vannlatingsplager hos kvinner. (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)
-
Siri Fauli Munkerud; Sverre Grepperud; Sverre Sandberg
(2018). Hjemmetjenesten driver omfattende laboratorievirksomhet. (external link)
-
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)
-
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)
-
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)
-
Sverre Sandberg; A Brun; O Skadberg
et al. (2001). Akutt intermitterende porfyri er en vanskelig diagnose - spesielt hos barn. (external link)
-
Øyvind Skadberg; Atle Brun; Sverre Sandberg
(2003). Human reticulocytes isolated from peripheral blood: maturation time and hemoglobin synthesis. (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)
-
Reidun Lisbet Skeide Kjome; Kari Nerhus; Sverre Sandberg
(2010). Implementation of a method for glucose measurements in community pharmacies. (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)
-
Roar Gjelsvik; Oddvar Martin Kaarbøe; Hanne Husom Haukland
et al. (2008). Riktigere bruk av laboratorietjenester – økonomiske aspekter. (external link)
-
Phillip J. Monaghan; Sarah Robinson; Daniel Rajdl
et al. (2018). Practical guide for identifying unmet clinical needs for biomarkers. (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)
-
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)
-
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)
-
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)
-
Sverre Sandberg
(1997). Systematic review of diagnostic 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)
-
Sverre Sandberg
(1997). Systematic reviews of diagnostic tests - a new challenge for laboratory medicine. (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)
-
William A. Bartlett; Sverre Sandberg; Anna Carobene
et al. (2024). A standard to report biological variation data studies - Based on an expert opinion. (external link)
-
Anna Carobene; Eric Kilpatrick; William A. Bartlett
et al. (2024). The biological variation of insulin resistance markers: Data from the European Biological Variation Study (EuBIVAS). (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)
-
Reidun Lisbet Skeide Kjome; Sverre Sandberg; Anne Gerd Granås
(2008). Diabetes care in Norwegian pharmacies: a descriptive study. (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)
-
Anh Thi Tran; Åsne Bakke; Tore Julsrud Berg
et al. (2018). Are general practitioners characteristics associated with the quality of type 2 diabetes care in general practice? Results from the Norwegian ROSA4 study from 2014. (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)
-
Reidun Lisbet Skeide Kjome; Thomas Helge Røraas; Anne Gerd Granås
et al. (2012). Fylkesvise forskjeller i salg av blodglukosestrimler og antidiabetika. (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)
-
Matthias Orth; Sverre Sandberg; Patti Shih
(2025). Direct-to-Consumer Testing: Benefits and Concerns of Commercially Accessed Laboratory Tests. (external link)
-
Aasne Karine Aarsand; Abdurrahman Coşkun; Sverre Sandberg
(2025). Utilizing the Stability of Individual Homeostatic Setpoints over Time - A Step Forward on the Path to Personalized Laboratory Medicine. (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)
-
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)
-
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)
-
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)
-
Pernille Kjeilen Fauskanger; Sverre Sandberg; Jesper Johansen
et al. (2025). Quantification of Difference in Nonselectivity Between In Vitro Diagnostic Medical Devices. (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)
-
Wytze P. Oosterhuis; Abdurrahman Coskun; Sverre Sandberg
et al. (2023). Performance specifications for sodium should not be based on biological variation. (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)
-
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)
-
Signe Flottorp; AD Oxman; JG Cooper
et al. (2000). Retningslinjer for diagnostikk og behandling av sår hals. (external link)
-
Torleif Trydal; Bjørn Johan Bolann; Frank Brosstad
et al. (2005). Analyse av protrombintid i primærhelsetjenesten. (external link)
-
Janne Cadamuro; Ana-Maria Simundic; Éva Ajzner
et al. (2017). A pragmatic approach to sample acceptance and rejection. (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)
-
BJ Bolann; Sverre Sandberg
(2003). Evaluation of new laboratory tests. (external link)
-
Janne Cadamuro; Cornelia Mrazek; Elisabeth Haschke-Becher
et al. (2017). To report or not to report: A proposal on how to deal with altered test results in hemolytic samples. (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)
-
Gunn Berit Berge Kristensen; Grete Monsen; Svein Skeie
et al. (2008). Standardized Evaluation of Nine Instruments for Self-Monitoring of Blood Glucose. (external link)
-
Aasne Karine Aarsand; Thomas Røraas; Pilar Fernandez-Calle
et al. (2017). The biological variation data critical appraisal checklist: A standard for evaluating studies on biological variation. (external link)
-
Kari Nerhus; Pål Rustad; Sverre Sandberg
(2011). Effect of ambient temperature on analytical performance of self-monitoring blood glucose systems. (external link)
-
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)
-
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 akutte vannlatingsplager hos kvinner. (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)
-
Siri Fauli Munkerud; Sverre Grepperud; Sverre Sandberg
(2018). Hjemmetjenesten driver omfattende laboratorievirksomhet. (external link)
-
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)
-
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)
-
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)
-
Sverre Sandberg; A Brun; O Skadberg
et al. (2001). Akutt intermitterende porfyri er en vanskelig diagnose - spesielt hos barn. (external link)
-
Øyvind Skadberg; Atle Brun; Sverre Sandberg
(2003). Human reticulocytes isolated from peripheral blood: maturation time and hemoglobin synthesis. (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)
-
Reidun Lisbet Skeide Kjome; Kari Nerhus; Sverre Sandberg
(2010). Implementation of a method for glucose measurements in community pharmacies. (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)
-
Roar Gjelsvik; Oddvar Martin Kaarbøe; Hanne Husom Haukland
et al. (2008). Riktigere bruk av laboratorietjenester – økonomiske aspekter. (external link)
-
Phillip J. Monaghan; Sarah Robinson; Daniel Rajdl
et al. (2018). Practical guide for identifying unmet clinical needs for biomarkers. (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)
-
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)
-
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)
-
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)
-
Sverre Sandberg
(1997). Systematic review of diagnostic 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)
-
Sverre Sandberg
(1997). Systematic reviews of diagnostic tests - a new challenge for laboratory medicine. (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)
-
William A. Bartlett; Sverre Sandberg; Anna Carobene
et al. (2024). A standard to report biological variation data studies - Based on an expert opinion. (external link)
-
Anna Carobene; Eric Kilpatrick; William A. Bartlett
et al. (2024). The biological variation of insulin resistance markers: Data from the European Biological Variation Study (EuBIVAS). (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)
-
Reidun Lisbet Skeide Kjome; Sverre Sandberg; Anne Gerd Granås
(2008). Diabetes care in Norwegian pharmacies: a descriptive study. (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)
-
Anh Thi Tran; Åsne Bakke; Tore Julsrud Berg
et al. (2018). Are general practitioners characteristics associated with the quality of type 2 diabetes care in general practice? Results from the Norwegian ROSA4 study from 2014. (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)
-
Reidun Lisbet Skeide Kjome; Thomas Helge Røraas; Anne Gerd Granås
et al. (2012). Fylkesvise forskjeller i salg av blodglukosestrimler og antidiabetika. (external link)
-
Christoph Buchta; Rachel Marrington; Barbara De la Salle
et al. (2025). Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part III – EQA samples. (external link)
-
Wytze P. Oosterhuis; Abdurrahman Coskun; Sverre Sandberg
et al. (2026). Measurement uncertainty for practical use – applied in hematology. (external link)
-
Dår Kristian Kur; Elisabet Eriksson Boija; Christine Morken
et al. (2025). Analytical performance and user-friendliness of four point-of-care measuring systems for monitoring prothrombin time international normalized ratio in the hands of the intended users. (external link)
-
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)
-
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)
-
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)
-
Aasne K. Aarsand; Helge Boman; Sverre Sandberg
(2009). Familial and sporadic porphyria cutanea tarda: characterization and diagnostic strategies. (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)
-
Wagner S. Brum; Nicholas Ashton; Joel Simrén
et al. (2023). Biological variation estimates of Alzheimer's disease plasma biomarkers in healthy individuals. (external link)
-
Helene J. Bustad; Karen Toska; Caroline Schmitt
et al. (2019). A Pharmacological Chaperone Therapy for Acute Intermittent Porphyria. (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)
-
John Cooper; Geir Thue; Tor Claudi
et al. (2013). The Norwegian Diabetes Register for Adults –an overview of the first years. (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)
-
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)
-
Sverre Sandberg
(2000). Kan laboratoriesvaret få konsekvenser for pasienten?. (external link)
-
Bjørn Johan Bolann; Sverre Sandberg
(2003). Evaluering av nye laboratorieanalyser. (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)
-
WP Oosterhuis; DE Bruns; J Watine
et al. (2004). Evidence-based guidelines in laboratory medicine: Principles and methods. (external link)
-
Carl Michael Baravelli; Sverre Sandberg; Aasne Karine Aarsand
et al. (2019). Porphyria cutanea tarda increases risk of hepatocellular carcinoma and premature death: A nationwide cohort study. (external link)
-
Giulia Cajano; Elena Guerra; Massimo Locatelli
et al. (2019). The importance of the Biological Variation Data Critical Appraisal Checklist when designing experimental studies on biological variation. Comparison of two papers reporting biological variation results for S100-β and neuron-specific enolase proteins. (external link)
-
Sverre Sandberg; Geir Thue
(1999). External quality assurance of test requesting and test interpretation. (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)
-
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)
-
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)
-
Aslaug Johanne Risøy; Reidun Lisbet Skeide Kjome; Sverre Sandberg
et al. (2023). Diabetes risk assessments and HbA1c-measurements in community pharmacies. (external link)
-
Mauro Panteghini; Ferruccio Ceriotti; Graham Jones
et al. (2017). Strategies to define performance specifications in laboratory medicine: 3 years on from the Milan Strategic Conference. (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)
-
TM Eggebo; E Smedvig; GF Zanussi
et al. (2000). Foster med hydrops hos kvinne fra Vietnam. (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)
-
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)
-
Sverre Sandberg; Nina Gade Christensen; Marianne Jevnaker
et al. (1996). Analysekvalitet av hemoglobin og glukose i allmennpraksis. (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)
-
Anne Lise Bjørke Monsen; Roar Gjelsvik; Oddvar Martin Kaarbøe
et al. (2008). Riktigere bruk av laboratorietjenester – medisinske aspekter. (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)
-
Sverre Sandberg; K Hellsing; PJ Jørgensen
et al. (1997). SKUP - Skandinavisk samarbeid om utprøving av laboratorieutstyr for primærhelsetjenesten. (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)
-
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)
-
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)
-
JA Stakkestad; Sverre Sandberg; KS Bjerve
et al. (1997). Use and usefulnes of laboratory handbooks. (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)
-
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)
-
Sverre Sandberg; Geir Thue
(1999). Quality specifications based upon objective analyses based upon clinical needs. (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)
-
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)
-
Mette Christophersen Tollånes; Anne Karen Jenum; Tore Julsrud Berg
et al. (2020). Availability and analytical quality of hemoglobin A1c point-of-care testing in general practitioners’ offices are associated with better glycemic control in type 2 diabetes. (external link)
-
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)
-
Wytze P. Oosterhuis; Sverre Sandberg
(2015). Proposal for the modification of the conventional model for establishing performance specifications. (external link)
-
Una Ørvim Sølvik; John Cooper; Karianne Fjeld Løvaas
et al. (2024). A register-based study describing time trends in risk factor control and serious hypoglycaemia together with the effects of starting continuous glucose monitoring in people with type 1 diabetes in Norway. (external link)
-
Isabel Moreno-Parro; Jorge Diaz-Garzon; Aasne Karine Aarsand
et al. (2024). Biological Variation Data in Triathletes for Metabolism and Growth-Related Biomarkers Included in the Athlete Biological Passport. (external link)
-
Joakim Hekland; Christine Morken ; Elisabet Eriksson Boija
et al. (2025). Diagnostic performance and user-friendliness of five rapid antigen tests for severe acute respiratory syndrome coronavirus 2. (external link)
-
Christoph Buchta; Rachel Marrington; Barbara De la Salle
et al. (2025). Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part II – EQA cycles. (external link)
-
Christoph Buchta; Barbara De la Salle; Rachel Marrington
et al. (2025). Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part V – Benefits for stakeholders other than participants. (external link)
-
Paul Kjetel Soldal Lillemoen; Pernille Kjeilen Fauskanger; Sverre Sandberg
et al. (2025). Biological Variation of Erythrocyte Total, Metal-Free, and Zinc Protoporphyrin IX in Patients with Erythropoietic Protoporphyria and Healthy Subjects: Implications for Clinical Interpretation and Monitoring. (external link)
-
Anne Stavelin; Eva Rønneseth; Anne Lise Fossum
et al. (2025). Quality assurance using patient split samples: recommendations for primary healthcare laboratories. (external link)
-
Torleif Trydal; Bjørn Bolann; Frank Roger Brosstad
et al. (2005). Analyse av protrombintid i primærhelsetjenesten. (external link)
-
Noemie Clouet-Foraison; Santica M. Marcovina; Elena Guerra
et al. (2020). Analytical performance specifications for lipoprotein(a), apolipoprotein B-100, and apolipoprotein A-I using the biological variation model in the EuBIVAS population. (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; Wenche Iren Bjelkarøy; Kari van den Berg
et al. (2017). Intensive educational efforts combined with external quality assessment improve the preanalytical phase in general practitioner offices and nursing homes. (external link)
-
Aasne Karine Aarsand; Sverre Sandberg
(2014). How to achieve harmonisation of laboratory testing -The complete picture. (external link)
-
Giuseppe Lippi; Kathleen Becan-McBride; Darina Behúlová
et al. (2013). Preanalytical quality improvement: in quality we trust. (external link)
-
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)
-
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)
-
Janice Andersen; Karin Nordin; Sverre Sandberg
(2016). Illness perception and psychological distress in persons with porphyria cutanea tarda. (external link)
-
M Aune; Sverre Sandberg
(2000). Automated counting of white and red blood cells in the cerebrospinal fluid. (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)
-
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)
-
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)
-
Thomas Røraas; Sverre Sandberg; Aasne Karine Aarsand
et al. (2019). A Bayesian Approach to Biological Variation Analysis. (external link)
-
A Brock; Sverre Sandberg
(2000). Porphyrins and Porphyrias. Review and special articles from the Nordic countries. (Spesialnummer). (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)
-
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)
-
TM Eggebo; Eli Smedvig; GF Zanussi
et al. (2000). Foster med hydrops hos kvinne fra Vietnam. (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)
-
Gro Gidske; Sverre Sandberg; Anne Lise Fossum
et al. (2022). Point-of-care testing in primary healthcare: a scoring system to determine the frequency of performing internal quality control. (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)
-
Signe Flottorp; AD Oxman; JG Cooper
et al. (2000). Retningslinjer for diagnostikk og behandling av sår hals. (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)
-
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)
-
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)
-
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)
-
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)
-
G Hølleland; Sverre Sandberg
(1999). Bruk og tolking av serum-kalsiumanalyse. (external link)
-
Anh Thi Tran; Tore Julsrud Berg; Ibrahimu Mdala
et al. (2020). Factors associated with potential over- and undertreatment of hyperglycaemia and annual measurement of HbA<inf>1c</inf> in type 2 diabetes in norwegian general practice. (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)
-
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)
-
Ann-Helen Kristoffersen; Anne Stavelin; Éva Ajzner
et al. (2019). Pre-analytical practices for routine coagulation tests in European laboratories. A collaborative study from the European Organisation for External Quality Assurance Providers in Laboratory Medicine (EQALM). (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)
-
Una Ørvim Sølvik; Elisabeth Sellevoll Løkkebø; Ann-Helen Kristoffersen
et al. (2015). Egenkontroll av warfarinbehandling. (external link)
-
Sverre Sandberg
(2000). Nodelling an estimation of measurement error. (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)
-
Svein Skeie; Geir Thue; Sverre Sandberg
(2000). Use and interpretation og HbA1c-testing in general practice. Implications for quality of care. (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)
-
Ann-Helen Kristoffersen; Per Hyltoft Petersen; Line Bjørge
et al. (2019). Concentration of fibrin monomer in pregnancy and during the postpartum period. (external link)
-
Svein Skeie; Geir Thue; Sverre Sandberg
(2001). Patient-derived quality specifications for instruments used in self-monitoring of blood glucose. (external link)
-
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)
-
Carmen Ricós; Pilar Fernández-Calle; Elisabet Gonzalez-Lao
et al. (2020). Critical appraisal and meta-Analysis of biological variation studies on glycosylated albumin, glucose and HbA<inf>1c</inf>. (external link)
-
Giuseppe Lippi; Jeffrey J. Chance; Stephen Church
et al. (2011). Preanalytical quality improvement: from dream to reality. (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)
-
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)
-
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)
-
Sverre Sandberg
(1999). Measurement error and laboratory medicine. (external link)
-
Anne Stavelin; Sverre Sandberg
(2018). Harmonization activities of Noklus - A quality improvement organization for point-of-care laboratory examinations. (external link)
-
M Rynning; Sverre Sandberg; M Økland
(1997). Etablering av referanseverdier. (external link)
-
Kristina Barbara Slåtsve; Tor Claudi; Knut Tore Lappegård
et al. (2020). The total prevalence of diagnosed diabetes and the quality of diabetes care for the adult population in Salten, Norway. (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)
-
Sverre Sandberg; W. Oosterhuis; D. Freedman
et al. (1997). Systematic reviewing in laboratory medicine. (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)
-
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)
-
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)
-
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)
-
Outi Itkonen; Niels Jonker; Aasne Karine Aarsand
et al. (2024). The European biological variation study (EuBIVAS): Biological variation data for testosterone, follicle stimulating hormone, prolactin, luteinizing hormone and dehydroepiandrosterone sulfate in men. (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)
-
Ann-Helen Kristoffersen; Geir Thue; Sverre Sandberg
(2006). Postanalytical external quality assessment of warfarin monitoring in primary healthcare. (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)
-
Christoph Buchta; Rachel Marrington; Barbara De la Salle
et al. (2025). Behind the scenes of EQA – characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part I – EQA in general and EQA programs in particular. (external link)
-
Christoph Buchta; Barbara De la Salle; Rachel Marrington
et al. (2025). Behind the scenes of EQA–characteristics, capabilities, benefits and assets of external quality assessment (EQA): Part IV – Benefits for participant laboratories. (external link)
-
Anne Elisabeth Solsvik; Pernille Kjeilen Fauskanger; Anne Stavelin
et al. (2025). A New International Patient-Based External Quality Assessment Program to Monitor Harmonization and Standardization Efforts. (external link)
-
Tone Bukve; Sverre Sandberg; Wenche Sletbakk Vie
et al. (2019). Commutability of a whole-blood external quality assessment material for point-of-care C-reactive protein, glucose, and hemoglobin testing. (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)
-
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)
-
Janice Andersen; Janne Thomsen; Åshild Rostad Enes
et al. (2020). Health-related quality of life in porphyria cutanea tarda: A cross-sectional registry based study. (external link)
-
JA Stakkestad; Sverre Sandberg; Kristian S Bjerve
et al. (1997). Use and usefullness of laboratory handbooks. (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)
-
Adil I. Khan; Busadee Pratumvinit; Ellis Jacobs
et al. (2023). Point-of-care testing performed by healthcare professionals outside the hospital setting: Consensus based recommendations from the IFCC Committee on Point-of-Care Testing (IFCC C-POCT). (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)
-
Kjersti Nøkleby; Tore Julsrud Berg; Ibrahimu Mdala
et al. (2020). Variation between general practitioners in type 2 diabetes processes of care. (external link)
-
Signe Flottorp; AD Oxman; JG Cooper
et al. (2000). Retningslinjer for diagnostikk og behandling av akutte vannlatingsplager hos kvinner. (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)
-
AD Oxman; Signe Flottorp; JG Cooper
et al. (2000). Nivået på dokumentasjonen og styrken på anbefalingene i kliniske retningslinjer. (external link)
-
Gro Gidske; Nina Gade Christensen; Marianne Jevnaker
et al. (1998). Resultater fra NOKLUS' utsendelser 1993-97. (external link)
-
Per Hyltoft Petersen; L Jørgensen; E Jensen
et al. (2003). Er GUM skadelig - eller blot overflødig?. (external link)
-
M Aune; Sverre Sandberg
(2000). Automated counting of white and red blood cells in the cerebrospinal fluid. (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)
-
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)
-
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)
-
John Cooper; Åsne Bakke; Ingvild Dalen
et al. (2019). Factors associated with glycaemic control in adults with Type 1 diabetes: a registry-based analysis including 7601 individuals from 34 centres in Norway. (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)
-
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)
-
Per Hyltoft Petersen; CG Fraser; Sverre Sandberg
et al. (1999). The index of individuality is often a misinterpreted quantity characteristic. (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)
-
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)
-
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)
-
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)
-
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)
-
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)
-
Signe Flottorp; AD Oxman; JG Cooper
et al. (2000). Retningslinjer for diagnostikk og behandling av sår hals. (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)
-
A Brock; Sverre Sandberg
(2000). Porphyrins and Porphyrias. Review and special articles from the Nordic countries. (Spesialnummer). (external link)
-
Laurent Gouya; Paolo Ventura; Manisha Balwani
et al. (2019). EXPLORE: A prospective, multinational, natural history study of patients with acute hepatic porphyria with recurrent attacks. (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)
-
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)
-
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)
-
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)
-
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)
-
Siri Carlsen; Torild Skrivarhaug; Geir Thue
et al. (2017). Glycemic control and complications in patients
with type 1 diabetes – a registry-based
longitudinal study of adolescents and young
adults. (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)
-
Mira Mykletun; Aasne Karine Aarsand; Egil Støle
et al. (2014). Porfyrisykdommer i Norge. (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)
-
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)
-
J.A Stakkestad; Sverre Sandberg; K.S. Bjerve
et al. (1997). Use and usefulnes of laboratory handbooks. (external link)
-
Sverre Sandberg
(1997). Systematic review of diagnostic tests. (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)
-
Kristin Aakre; Wytze P. Oosterhuis; Sverre Sandberg
(2012). How do laboratory specialists advise clinicians concerning the use and interpretation of renal tests?. (external link)
-
Aasne Karine Aarsand; Sverre Sandberg
(2005). Porphyrias, a challenge for diagnostic assessment and treatment.. (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)
-
Mario Plebani; Janne Cadamuro; Pieter Vermeersch
et al. (2024). A vision to the future: Value-based laboratory medicine. (external link)
-
Sverre Sandberg; K Hellsing; PJ Jørgensen
et al. (1997). SKUP - Skandinavisk samarbeid om utprøving av laboratorieutstyr for primærhelsetjenesten. (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)
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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)
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Sverre Sandberg; Abdurrahman Coskun; Anna Carobene
et al. (2024). Analytical performance specifications based on biological variation data – considerations, strengths and limitations. (external link)
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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)
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Séverine L. D. Toussaint; Jasper Ponstein; Mathieu Thoury
et al. (2022). Fur glowing under ultraviolet: in situ analysis of porphyrin accumulation in the skin appendages of mammals. (external link)
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Aasne Karine Aarsand; Sverre Sandberg
(2010). Porfyri: Symptomer - diagnostisering - behandling. (external link)
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Abdurrahman Coskun; Sverre Sandberg; Ibrahim Unsal
et al. (2021). Personalized reference intervals - Statistical approaches and considerations. (external link)
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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)
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Kjersti Nøkleby; Anne Karen Jenum; Esben Selmer Buhl
et al. (2024). Effects on HbA1c of referral of type 2 diabetes patients to secondary care. (external link)
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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)
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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)
Letter to the editor
Academic literature review
Non-fiction monograph
Conference poster
Conference lecture
Conference abstract
Academic book chapter
Editorial/Leader article
Media feature article
Research report
Non-fiction book chapter
Journal corrigendum
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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)
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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)
Doctoral thesis (PhD)
Master’s thesis
See a complete overview of publications in NVA.