Analysis for narcotic analgesics and barbiturates in urine by thin-layer chromatographic techniques without previous extraction and concentration.
D001463:Barbiturates / Q000652:urine*; D002855:Chromatography, Thin Layer; D006801:Humans; D009294:Narcotics / Q000652:urine*
D001463:Barbiturates; D009294:Narcotics