title: Application of paired-ion high-pressure liquid column chromatography to the analysis of L-3,4-dihydroxyphenylalanine metabolites.
mesh_terms: D002230:Carbidopa / Q000378:metabolism / Q000652:urine*; D002851:Chromatography, High Pressure Liquid; D004338:Drug Combinations; D005260:Female; D006801:Humans; D006834:Hydrazines / Q000652:urine*; D007980:Levodopa / Q000378:metabolism / Q000652:urine*; D008297:Male; D010300:Parkinson Disease / Q000378:metabolism / Q000652:urine*
chemical_list: D004338:Drug Combinations; D006834:Hydrazines; D007980:Levodopa; D002230:Carbidopa