title: Importance of quality assurance in testing drugs of abuse.
authors.forename: S D
authors.initials: SD
authors.lastname: Ferrara
mesh_terms: D001826:Body Fluids / Q000737:chemistry; D006801:Humans; D013287:Illicit Drugs / Q000032:analysis; D011786:Quality Control; D015813:Substance Abuse Detection / Q000379:methods / Q000592:standards*; D014481:United States
chemical_list: D013287:Illicit Drugs