title: Urine drug screening.
authors: J L
authors: JL
authors: Valentine
authors: H
authors: H
authors: Farrar
authors: L
authors: L
authors: James
authors: T
authors: T
authors: Wells
authors: P
authors: P
authors: Simpson
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D013287:Illicit Drugs / Q000652:urine*; D007118:Immunoassay / Q000379:methods
chemical_list: D013287:Illicit Drugs