title: Preadsorbent thin-layer chromatography. III. Direct detection of quinine in urine as a presumptive test for heroin.
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods; D003932:Heroin / Q000652:urine*; D006556:Heroin Dependence / Q000652:urine; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D011803:Quinine / Q000652:urine*
chemical_list: D003932:Heroin; D011803:Quinine; D008691:Methadone