title: High-pressure liquid chromatographic analysis of drugs in biological fluids I. Warfarin.
abstract: A rapid, sensitive, and specific high-pressure liquid chromatographic (HPLC) method for the quantitative analysis of warfarin in plasma is described. The method involves a single solvent extraction of warfarin and the internal standard form acidified plasma, followed by evaporation and HPLC analysis. The method is sufficiently sensitive and accurate for most pharmacokinetic studies: concentrations between 0.1 and 4.0 mug/ml can be measured with a coefficient of variation of 2-5%. Known metabolites of warfarin do not interfere with the analysis.
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006801:Humans; D008297:Male; D008722:Methods; D013997:Time Factors; D014859:Warfarin / Q000097:blood*
chemical_list: D014859:Warfarin