El-Khoury, Joe; Yang, Yifei; Rogers, Katherine; Wardle, Robert
(2016-06-14)
Background
Liquid chromatography–tandem mass spectrometry (LC–MS/MS) is widely used for the measurement of 25-hydroxyvitamin D3 (25OHD3) and 25-hydroxyvitamin D2 (25OHD2) in blood. However, the presence of 25OHD3 C3-epimer ...