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The page below is a sample from the LabCE course Drug Testing Methods in the Clinical Toxicology Laboratory. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Oxymorphone has a half-life of seven to nine hours and can be detected in the urine for up to three days after ingestion.
For patients taking only oxymorphone, oxymorphone alone will be detected in the urine. If oxycodone is detected, oxymorphone could be present as a metabolite rather than ingestion.