title: Determination of the presence of morphine in urine.
mesh_terms: D002849:Chromatography, Gas; D002852:Chromatography, Ion Exchange; D002855:Chromatography, Thin Layer; D005069:Evaluation Studies as Topic; D006556:Heroin Dependence / Q000188:drug therapy* / Q000652:urine; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D008722:Methods; D008832:Microchemistry; D009020:Morphine / Q000652:urine*; D011863:Radioimmunoassay; D013050:Spectrometry, Fluorescence
chemical_list: D009020:Morphine; D008691:Methadone