Application of a generic fast gradient liquid chromatography tandem mass spectrometry method for the analysis of cytochrome P450 probe substrates

Rapid Commun Mass Spectrom. 1998;12(5):217-24. doi: 10.1002/(SICI)1097-0231(19980314)12:5<217::AID-RCM146>3.0.CO;2-I.


A liquid chromatography tandem mass spectrometry (LC/MS/MS) method has been developed for the fast routine analysis of selected CYP450 probe substrate metabolites in microsomal incubations, with no sample pretreatment. This has allowed fast and simple assessment of the potential effects which drug candidates may or may not have on the metabolism of specific CYP450 probe substrates, providing information which can then be used to rationalize in vivo interaction studies required in the clinic. This methodology takes advantage of fast gradient chromatography as a generic means of sample separation and analysis. It provides high throughput analysis compared to conventional gradient HPLC, with no significant loss in chromatographic performance.

MeSH terms

  • Chromatography, Liquid
  • Cytochrome P-450 Enzyme System / metabolism*
  • Humans
  • In Vitro Techniques
  • Mass Spectrometry
  • Microsomes / enzymology
  • Pharmaceutical Preparations / analysis*
  • Pharmaceutical Preparations / chemistry
  • Pharmaceutical Preparations / metabolism*
  • Spectrophotometry, Ultraviolet


  • Pharmaceutical Preparations
  • Cytochrome P-450 Enzyme System