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fentanyl will not show up on a standard urine drug screen. While it is an opioid analgesic of the same class of morphine, it is in a different subclass. Fentanyl is a synthetic opioid were morphine is a natural occurring opioid that is extracted from the poppy plant. The chemical structure is very different between these two substances which leads to different methods of metabolism in the body. The urine drug screen picks up the metabolites of typical drugs of abuse such as morphine or codein or hydromorphone. While the metabolites of fentanyl can not be detected in a urine drug test. Other drug screens are available for such drugs but must be specially ordered for direct suspicion of such substance abuse

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Q: Does fentynal show up on a urine test?
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