Academic article

• Eirik Åsen Røys; Kristin Viste; Christopher John Farrell et al. (2025). A Parametric Empirical Bayes Approach to Personalized Reference Intervals and Reference Change Values. (external link)
• Eirik Åsen Røys; Kristin Viste; Ralf Kellmann et al. (2025). Estimating Reference Change Values Using Routine Patient Data: A Novel Pathology Database Approach. (external link)
• Eirik Åsen Røys; Nora Alicia Guldhaug; kristin Viste et al. (2023). Sex Hormones and Adrenal Steroids: Biological Variation Estimated Using Direct and Indirect Methods. (external link)
• Grethe Åstrøm Ueland; Ralf Kellmann; Melissa Davidsen Jørstad et al. (2021). Bedtime Salivary Cortisol as a Screening Test for Cushing Syndrome in Children. (external link)
• Angela H. Soeriyadi; Rabia Mazmouz; Russell Pickford et al. (2020). Heterologous expression of an unusual ketosynthase, SxtA, leads to production of saxitoxin intermediates in Escherichia coli. (external link)
• Bjørn-Erik Bertelsen; Ralf Kellmann; Kristin Viste et al. (2020). An ultrasensitive routine LC-MS/MS method for estradiol and estrone in the clinically relevant sub-picomolar range. (external link)
• Grethe Åstrøm Ueland; Paal Methlie; Marianne Øksnes et al. (2018). The short cosyntropin test revisited: new normal reference range using LC-MS/MS. (external link)
• Kareem Eldin Mohammed Ahmed; Håvard G Frøysa; Odd Andre Karlsen et al. (2018). Effects of defined mixtures of POPs and endocrine disruptors on the steroid metabolome of the human H295R adrenocortical cell line. (external link)
• Mohammed Adhmed Abdel Ghafar Kareem Eldin; Håvard G Frøysa; Odd Andre Karlsen et al. (2018). LC-MS/MS based profiling and dynamic modelling of the steroidogenesis pathway in adrenocarcinoma H295R cells. (external link)
• Grethe Åstrøm Ueland; Paal Methlie; Ralf Kellmann et al. (2017). Simultaneous assay of cortisol and dexamethasone improved diagnostic accuracy of the dexamethasone suppression test. (external link)
• Peder Braadland; Helene Hartvedt Grytli; Håkon Andre Ramberg et al. (2016). Low β2-adrenergic receptor level may promote development of castration resistant prostate cancer and altered steroid metabolism. (external link)
• Anke Corinna Stüken; Russell Orr; Ralf Kellmann et al. (2011). Discovery of Nuclear-Encoded Genes for the Neurotoxin Saxitoxin in Dinoflagellates. (external link)
• Shauna A. Murray; Maria Wiese; Anke Stüken et al. (2011). sxtA-Based Quantitative Molecular Assay To Identify Saxitoxin-Producing Harmful Algal Blooms in Marine Waters. (external link)
• Leanne Pearson; Troco K. Mihali; Michelle Moffitt et al. (2010). On the chemistry, toxicology and genetics of the cyanobacterial toxins, microcystin, nodularin, saxitoxin and cylindrospermopsin. (external link)
• Ralf Kellmann; Carlos António Markus Schaffner; Toril Anne Grønset et al. (2009). Proteomic response of human neuroblastoma cells to azaspiracid-1. (external link)
• Troco Kaan Mihali; Ralf Kellmann; Brett A. Neilan (2009). Characterisation of the paralytic shellfish toxin biosynthesis gene clusters in Anabaena circinalis AWQC131C and Aphanizomenon sp. NH-5. (external link)
• Ralf Kellmann; Troco Kaan Mihali; Brett A. Neilan (2008). Identification of a Saxitoxin Biosynthesis Gene with a History of Frequent Horizontal Gene Transfers. (external link)
• Ralf Kellmann; Troco Kaan Mihali; Young Jae Jeon et al. (2008). Biosynthetic intermediate analysis and functional homology reveal a saxitoxin gene cluster in cyanobacteria. (external link)
• Troco Kaan Mihali; Ralf Kellmann; Julia Muenchhoff et al. (2008). Characterization of the Gene Cluster responsible for Cylindrospermopsin Biosynthesis. (external link)
• Ralf Kellmann; Brett A. Neilan (2007). Biochemical characterisation of paralytic shellfish toxin biosynthesis in vitro. (external link)

Academic literature review

• Ralf Kellmann; Anke Stüken; Russell J. S. Orr et al. (2010). Biosynthesis and Molecular Genetics of Polyketides in Marine Dinoflagellates. (external link)

Conference lecture

• Anke Stüken; Russell Orr; Ralf Kellmann et al. (2011). Discovery of nucelar-encoded genes for the neurotoxin saxitoxin in dinoflagellates. (external link)
• Anke Stüken; Russell Orr; Ralf Kellmann et al. (2011). Discovery of nucelar-encoded genes for the neurotoxin saxitoxin in dinoflagellates. (external link)
• Ralf Kellmann; Brett A. Neilan; Kari Espolin Fladmark et al. (2009). Saxitoxin biosynthesis in organisms from two kingdoms - horizontal gene transfer or parallel evolution?. (external link)
• Russell Orr; Mari Espelund; Ralf Kellmann et al. (2008). Evolution witihin the genus Alexandrium focusing on toxicity. (external link)
• Ralf Kellmann (2007). Alkaloid toxin production by cyanobacteria. (external link)

Conference poster

• Anke Stüken; Russell Orr; Ralf Kellmann et al. (2010). Saxitoxin gene identified in dinoflagellates. (external link)
• Ralf Kellmann; Toril A Grønset; Carlos a.m. Schaffner et al. (2008). Protein expression changes in human neuroblastoma cells treated with azaspiracid-1. (external link)

Journal corrigendum

• Ralf Kellmann; Troco Kaan Mihali; Brett Adam Neilan (2009). Identification of a Saxitoxin Biosynthesis Gene with a History of Frequent Horizontal Gene Transfers (vol 67, pg 526, 2008). (external link)

Letter to the editor

• Eirik Åsen Røys; kristin Viste; Christopher-John Farrell et al. (2025). Refining within-subject biological variation estimation using routine laboratory data: Practical applications of the refineR algorithm. (external link)

See a complete overview of publications in NVA.

LC-MS/MS methods hormones

quantitative- and phosphoproteomics

enzymology of secondary metabolite biosynthesis

molecular genetics

aquatic microbiology