Numerous studies show urine drug testing a critical tool in treatment of chronic noncancer pain.
Gilbert
John W
JW
D000701:Analgesics, Opioid / Q000652:urine*; D002853:Chromatography, Liquid; D005188:False Negative Reactions; D005189:False Positive Reactions; D006801:Humans; D007118:Immunoassay; D013058:Mass Spectrometry; D010146:Pain / Q000188:drug therapy*
D000701:Analgesics, Opioid