title: Identification of barbiturates in urine.
mesh_terms: D001463:Barbiturates / Q000652:urine*; D002250:Carbon Radioisotopes; D002855:Chromatography, Thin Layer; D005188:False Negative Reactions; D005189:False Positive Reactions; D006801:Humans; D008722:Methods; D019966:Substance-Related Disorders
chemical_list: D001463:Barbiturates; D002250:Carbon Radioisotopes