title: A simple and rapid gas chromatography for determining 3,4-dihydroxyphenylacetic acid and 3-methoxy-4-hydroxyphenylacetic acid in urine from patients with parkinsonism treated with L-3,4-dihydroxyphenylalanine.
mesh_terms: D002849:Chromatography, Gas; D004295:Dihydroxyphenylalanine / Q000627:therapeutic use*; D006626:Hippurates / Q000032:analysis; D006801:Humans; D007700:Kinetics; D008333:Mandelic Acids / Q000032:analysis; D008722:Methods; D010300:Parkinson Disease / Q000188:drug therapy / Q000652:urine; D010636:Phenols / Q000652:urine; D010648:Phenylacetates / Q000652:urine*; D014642:Vanilmandelic Acid / Q000652:urine
chemical_list: D006626:Hippurates; D008333:Mandelic Acids; D010636:Phenols; D010648:Phenylacetates; D014642:Vanilmandelic Acid; D004295:Dihydroxyphenylalanine