Drug-specific verification

Drug-class-specific verification considerations (opioids, amphetamines, cocaine, marijuana/THC, PCP, MDMA), permitted prescriptions, and clinical interpretation of positive results.

A commercial driver's urine specimen is confirmed positive for morphine at 5,200 ng/mL. Codeine and 6-acetylmorphine (6-AM) are both negative. During the verification interview, the driver denies any prescription drug use or recent consumption of poppy seeds. However, the driver's speech is notably slurred and they seem disoriented. The MRO suspects acute opiate intoxication. To verify this result as positive based on these behavioral signs, what is the required next step?

A.Verify the result as positive immediately based on the telephone interview and the confirmed lab result.

B.Verify the result as negative because the morphine concentration is below the 15,000 ng/mL threshold for mandatory positive verification.

C.Personally conduct a face-to-face medical examination of the driver or arrange for another physician to perform one.

D.Request the laboratory to conduct testing for D,L stereoisomers to determine if the result is from a legitimate source.