Liquid chromatography-tandem mass spectrometric assay for the analysis of uracil, 5,6-dihydrouracil and beta-ureidopropionic acid in urine for the measurement of the activities of the pyrimidine catabolic enzymes

Sparidans R, Bosch T, Jörger M, Schellens J, Beijnen J. Liquid chromatography-tandem mass spectrometric assay for the analysis of uracil, 5,6-dihydrouracil and beta-ureidopropionic acid in urine for the measurement of the activities of the pyrimidine catabolic enzymes. Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2006; 839:45-53.