Oxycodone and Oxymorphone Concentration in Urine (Drug Screen)
This test measures the presence of oxycodone and oxymorphone, two active ingredients in pain medications, in your urine. It helps detect recent use of these opioids.
["This test can help monitor pain management or identify misuse of prescription opioids."]
Key facts at a glance
- LOINC
- 91044-8
- Short code
- oxyCODONE+oxyMORphone Fld Ql Scn
- Synonyms
- oxyCODONE+oxyMORphone Fld Ql Scn
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- screen
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test looks for two related compounds: oxycodone and oxymorphone. These substances are found in medications like OxyContin®, Percocet®, and others. Oxycodone is converted in the body into oxymorphone, so both are tracked together to assess overall opioid exposure.
Why It’s Done
Your healthcare provider may order this test if you’re taking opioids for pain, if you’re suspected of opioid misuse, or as part of a broader drug screening (e.g., workplace, legal, or pre-employment). It can also be used to check for recent use before certain procedures.
How the Test Works
A small urine sample is collected and analyzed using a sensitive chemical method (likely high-performance liquid chromatography or immunoassay). This detects even small amounts of these drugs in your system.
What to Expect Before the Test
No special preparation is needed, but you may be asked to avoid certain foods or medications that could interfere with results. Follow your provider’s instructions if you’re pregnant, breastfeeding, or have kidney issues.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results indicate recent opioid use, which could affect pain management, safety during procedures, or legal/employment decisions. Negative results mean these drugs were not detected in your urine at the time of testing. Results may also help assess compliance with prescribed medications or identify potential misuse.
Short name
Urine Drug Panel (Oxycodone/Oxymorphone)
Frequently asked questions
How long does it take to get results?
Can I drink water before this test?
What if my results are positive?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy