申请人:Flockhart David A.
公开号:US20110111510A1
公开(公告)日:2011-05-12
The present invention relates, generally to a method of determining and assessing cytochrome P450 2C19-related (CYP2C19) metabolic capacity in an individual mammalian subject via a breath assay, by determining the relative amount of
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CO
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exhaled by the subject upon intravenous or oral administration of a
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C-labeled CYP2C19 substrate compound. The present invention is useful as anon-invasive, in vivo assay for evaluating CYP2C19 enzyme activity in a subject using the metabolite
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CO
2
in expired breath, to phenotype individual subjects and to determine the selection, optimal dosage and timing of drug administration.