Michael Van Parys

Aug 6, 2023 | analyticalsciencejournals.onlinelibrary.wiley.com | Yang Tang |Abigail Walker |Michael Van Parys |Alexandra Drelick

Abstract In pharmacokinetic studies for respiratory diseases, urea is a commonly used dilution marker for volume normalization of various biological matrices, owing to the fact that urea diffuses freely throughout the body and is minimally affected by disease states. In this study, we developed a convenient liquid chromatography–tandem mass spectrometry (LC–MS/MS) surrogate matrix assay for accurate urea quantitation in plasma, serum and epithelial lining fluid.