title: Analysis of unconjugated steroids in plasma by liquid-gel chromatography and glass capillary gas chromatography mass spectrometry.
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D002852:Chromatography, Ion Exchange / Q000379:methods; D005260:Female; D006801:Humans; D013058:Mass Spectrometry / Q000295:instrumentation / Q000379:methods; D011247:Pregnancy; D013256:Steroids / Q000097:blood*
chemical_list: D013256:Steroids