Home Products Most Popular Contact
No items in your cart.
The page below is a sample from the LabCE course Drug Metabolism. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

Learn more about Drug Metabolism (online CE course) »
How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 106 CE courses, most popular
$95 Add to cart
Pick Your Courses
Up to 8 CE hours
$50 Add to cart
Individual course$20 Add to cart

Opiates: Oxymorphone

Metabolism
  • Oxymorphone is metabolized to oxymorphone-3-glucuronide.
  • It is also metabolized to noroxymorphone by demethylation by CYP3A4.
Oxymorphone has a half-life of 7 to 9 hours and can be detected in the urine for up to 3 days after ingestion.
Interpretation
  • 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.
  • Oxymorphone alone may be detected at low concentrations due to metabolism of oxycodone if it has been several days since ingestion because oxymorphone has a significantly longer half-life than oxycodone.