title: Comparison of hemagglutination inhibiton test and radioimmunoassay for morphine in urine.
mesh_terms: D006385:Hemagglutination Inhibition Tests; D006556:Heroin Dependence / Q000175:diagnosis* / Q000652:urine; D006801:Humans; D009020:Morphine / Q000652:urine*; D011863:Radioimmunoassay
chemical_list: D009020:Morphine