Oxycodone and Oxymorphone Concentration in Urine (Screening and Confirmation)

This test gives your healthcare provider important information about your health by measuring specific substances in your body. It is often ordered to help diagnose a medical condition, check how well a treatment is working, or screen for problems before symptoms appear. Your provider will explain the specific reason this test was ordered for you.

Doctors may order this test to check for recent use of oxycodone or oxymorphone—commonly prescribed for pain management. It can be used in medical evaluations, workplace drug testing, or after suspected overdose or accidental exposure.

Before the test, your care team will give you specific instructions, which may include fasting for a certain number of hours, avoiding certain foods or medications, or drinking plenty of water. Tell your provider about any medications, supplements, or allergies you have. Plan to arrive a few minutes early with your insurance card and a list of your current medications.

No special preparation is needed. You’ll provide a urine sample in a private area. If testing for recent use, results may reflect exposure within hours to days, depending on the drug’s half-life in your body.

Your results will show whether your values fall within the normal reference range for this test. A result within range usually means no problem was found, while an out-of-range result does not always mean you are ill; it may simply call for repeat testing or closer monitoring. Your healthcare provider will review the results with you, explain what they mean in the context of your overall health, and discuss any next steps.

Positive results indicate the presence of oxycodone or oxymorphone in your urine. The concentration can help determine the timing of use (e.g., acute vs. chronic exposure). False positives may occur with certain medications or contaminants.

This test is commonly used to help diagnose conditions, monitor ongoing health problems, and guide treatment decisions. Keep in mind that no single test tells the whole story. Results can be affected by medications, diet, stress, and other factors, and false positive or false negative results can occur. Your provider interprets your results alongside your symptoms, medical history, and other testing.

This test is most useful for detecting recent drug use, not long-term storage. It’s not a definitive test for addiction but may flag potential misuse. False positives can occur with other substances or medications.