Stefan KG Grebe1,2,* and Ravinder J Singh1
Comparison between ultra-performance liquid chromatography with tandem mass spectrometry and a chemiluminescence immunoassay in the determination of cyclosporine A and tacrolimus levels in whole blood.
Wu AH1, French D.
C-3 epimers can account for a significant proportion of total circulating 25-hydroxyvitamin D in infants, complicating accurate measurement and interpretation of vitamin D status
Singh RJ1, Taylor RL, Reddy GS, Grebe SK.