title: Sensitive assay for pseudoephedrine and its metabolite, norpseudoephedrine in plasma and urine using gas--liquid chromatography with electron-capture detection.
mesh_terms: D000328:Adult; D002849:Chromatography, Gas / Q000379:methods; D004809:Ephedrine / Q000097:blood* / Q000627:therapeutic use / Q000652:urine; D006801:Humans; D008297:Male; D010665:Phenylpropanolamine / Q000652:urine*
chemical_list: D010665:Phenylpropanolamine; D004809:Ephedrine