Noroxymorphone in Urine (Mass Concentration)

Why This Test Is Done

Your healthcare provider may order this test if you are suspected of using opioids, such as oxymorphone, or if you are undergoing treatment for opioid dependence. It can also be used in workplace drug testing or legal investigations.

A urine sample is collected in a sterile container. The test measures noroxymorphone levels using a high-performance liquid chromatography (hplc) method, which separates and identifies the drug in your urine.

This test is typically done on a random urine sample, but sometimes a timed collection (like a 24-hour urine sample) may be requested for more accurate results.

You will likely be asked to provide a urine sample at a lab or clinic. The process is quick and painless. No special preparation is needed unless specified by your provider.

The sample is sent to a lab where it is analyzed to detect the presence of noroxymorphone. Results are usually available within a few days, depending on lab processing times.

Interpretation of results depends on clinical context, such as suspected use, treatment goals, or legal reasons. Your healthcare provider will discuss the meaning of your specific result with you.

Positive results indicate the presence of noroxymorphone in your urine, suggesting recent opioid exposure. Negative results mean no detectable levels were found.