title: Improved method for quantitative analysis of vitamin K1 and vitamin K1 2,3-epoxide in human plasma by electron-capture gas-liquid capillary chromatography.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D006801:Humans; D013237:Stereoisomerism; D010837:Vitamin K 1 / Q000031:analogs & derivatives* / Q000097:blood*
chemical_list: C016186:vitamin K1 oxide; D010837:Vitamin K 1