Commentary.
Porter
William H
WH
Department of Pathology and Laboratory Medicine, University of Kentucky Medical Center, Lexington, KY 40536, USA. wporter@uky.edu
D000701:Analgesics, Opioid / Q000652:urine*; D003429:Cross Reactions; D005189:False Positive Reactions; D006801:Humans; D007118:Immunoassay
D000701:Analgesics, Opioid