Screening for drug abuse.
D002855:Chromatography, Thin Layer; D004651:Employment; D006801:Humans; D007202:Indicators and Reagents; D013677:Medical Laboratory Science; D008722:Methods; D009020:Morphine / Q000652:urine; D012997:Solvents; D019966:Substance-Related Disorders / Q000175:diagnosis* / Q000652:urine; D013997:Time Factors; D000078329:Workforce
D007202:Indicators and Reagents; D012997:Solvents; D009020:Morphine