Urine drug testing is still an invaluable resource for primary care.
Reisfield
Gary M
GM
Graham
Noni A
NA
Gold
Mark S
MS
D000701:Analgesics, Opioid / Q000009:adverse effects*; D016903:Drug Monitoring / Q000592:standards*; D006801:Humans; D009293:Opioid-Related Disorders / Q000517:prevention & control*; D010146:Pain / Q000188:drug therapy; D011320:Primary Health Care; D016482:Urinalysis / Q000592:standards*
D000701:Analgesics, Opioid