title: Analysis of commonly abused drugs in urine at selected threshold (cutoff) concentrations.
authors.forename: I D
authors.initials: ID
authors.lastname: Watson
mesh_terms: D002047:Buprenorphine / Q000652:urine*; D003404:Creatinine / Q000652:urine; D005188:False Negative Reactions; D006801:Humans; D015813:Substance Abuse Detection
chemical_list: D002047:Buprenorphine; D003404:Creatinine