I have a non-DOT urine positive for hydrocodone 1538 ng/mL, norhydrocodone 1177 ng/mL.
Donor provided documentation for codeine-containing cough syrup. Denies any other narcotics.
Called toxicologist: codeine 906 and morphine 74.
Thoughts? I recall hydrocodone is a minor metabolite of codeine. So, shouldn't the metabolites in this case be less than the parent drug?
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