title: Positive diphenhydramine interference in the EMIT-d.a.u. assay.
mesh_terms: D004155:Diphenhydramine / Q000652:urine*; D006801:Humans; D007124:Immunoenzyme Techniques; D008691:Methadone / Q000652:urine*
chemical_list: D004155:Diphenhydramine; D008691:Methadone