Opioids and their metabolites

Does a drug test detect Oxymorphone?

Yes. Oxymorphone is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 50 ng/mL. The LabX 12-panel screen includes a Oxycodone line, but how strongly a screen reacts to Oxymorphone varies, so a negative screen does not rule it out. Laboratory confirmation measures Oxymorphone specifically.

50 ng/mLLaboratory cut-off
50–10,000 ng/mLReportable range
1-4 daysApprox. window (varies)
LC-MS/MSConfirmation method

What is Oxymorphone?

Oxymorphone is a semi-synthetic opioid. It is prescribed as a medicine in its own right and is also formed in smaller amounts when the body breaks down oxycodone.

Medical use

Oxymorphone is prescribed for moderate to severe pain.

How LabX tests for Oxymorphone

Oxymorphone is measured by liquid chromatography with tandem mass spectrometry (LC-MS/MS), which separates the compounds in a sample and identifies each one by its mass. That is different from a rapid screen, which reacts to a family of drugs and can occasionally react to a related substance. The laboratory reports Oxymorphone as detected when its concentration is at or above the cut-off of 50 ng/mL, within a reportable range of 50–10,000 ng/mL. It is one of 16 compounds in the opioids and their metabolites family on the 76-drug confirmation panel.

Detection window

The laboratory's confirmation report lists an approximate detection window of 1-4 days for Oxymorphone. Treat that as a rough guide only: how long any compound stays measurable varies with the amount taken, how often it is used, body composition, metabolism, kidney and liver function, and hydration. A laboratory result cannot be used to work out when a substance was taken.

Screen versus confirmation

The LabX 12-panel screen includes a Oxycodone line, but how strongly a screen reacts to Oxymorphone varies, so a negative screen does not rule it out. Laboratory confirmation measures Oxymorphone specifically.

Worth knowing

Oxymorphone found together with oxycodone and noroxycodone may simply reflect oxycodone metabolism; found on its own it more often reflects oxymorphone itself. Interpretation belongs with a licensed physician.

About this drug family

Prescription opioid pain medicines, heroin markers and the compounds the body makes from them. Measuring metabolites alongside parent drugs shows a drug was actually processed by the body.

Common questions

Does a drug test detect Oxymorphone?

Yes. Oxymorphone is one of the 76 compounds in the LabX LC-MS/MS confirmation panel, reported as detected at or above 50 ng/mL. The LabX 12-panel screen includes a Oxycodone line, but how strongly a screen reacts to Oxymorphone varies, so a negative screen does not rule it out. Laboratory confirmation measures Oxymorphone specifically.

What is the laboratory cut-off for Oxymorphone?

LabX reports Oxymorphone as detected at or above 50 ng/mL, and the method's reportable range is 50–10,000 ng/mL. A result below the cut-off is reported as not detected; it does not prove none was present.

How long can Oxymorphone be detected?

The laboratory lists an approximate window of 1-4 days, but it varies with dose, frequency of use, metabolism and hydration, and cannot be used to tell when something was taken.

Can a 12-panel drug screen detect Oxymorphone?

The LabX 12-panel screen includes a Oxycodone line, but how strongly a screen reacts to Oxymorphone varies, so a negative screen does not rule it out. Laboratory confirmation measures Oxymorphone specifically.

Is Oxymorphone a prescription medicine?

Oxymorphone is prescribed for moderate to severe pain.

Related compounds

Terms on this page: metabolite Β· cut-off Β· detection window Β· presumptive result Β· confirmation test. More questions: LabX answers.

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Talk to a licensed physician. LabX Diagnostics and Vantage provide laboratory testing only. The information on this page is educational and is not medical advice, diagnosis or treatment. Always consult a licensed physician or other qualified healthcare provider about test results, symptoms or medicines, and before making any health decision. If you think you may have a medical emergency, call 911. Read our medical disclaimer.

Medical disclaimer. LabX Diagnostics and Vantage provide laboratory testing only. Test results and information on this site are for informational purposes and are not medical advice, diagnosis or treatment. Always consult a licensed physician or other qualified healthcare provider about your results and before making any health decision. If you think you may have a medical emergency, call 911. Read the full disclaimer.

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