"Practical guide" to urine drug screening clarified.
Reisfield
Gary M
GM
Bertholf
Roger L
RL
D006801:Humans; D017410:Practice Guidelines as Topic; D011237:Predictive Value of Tests; D015813:Substance Abuse Detection / Q000379:methods*; D019966:Substance-Related Disorders / Q000175:diagnosis* / Q000652:urine*; D016482:Urinalysis