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Opioid Metabolite Screening (Tapentadol and Nortapentadol)

Published: August 9, 2026Updated: August 16, 2026

This test measures the presence of two active metabolites of tapentadol, a pain medication, in your urine. It helps assess drug use, compliance with treatment, or potential misuse.

Quick summary

["This test checks for specific painkiller metabolites to monitor opioid exposure."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
101401-8
Short code
Tapentadol & Nortapentadol pl Ur
Synonyms
Tapentadol & Nortapentadol pl Ur
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Why This Test Is Done

Doctors may order this test if you’re taking tapentadol (a prescription opioid pain reliever) and want to confirm whether your body is processing it correctly. It can also be used in drug testing, addiction treatment, or to evaluate compliance with a medication regimen.

What to Expect Before the Test

You’ll likely provide a urine sample in a clinic or lab. Follow any fasting or preparation instructions your healthcare provider gives you, as they may vary. Avoid certain foods or medications that could interfere with results.

What the Results Mean

Positive results indicate the presence of tapentadol metabolites, which may suggest recent opioid use. Higher levels could mean improper metabolism, dosing issues, or misuse. Your doctor will interpret results in the context of your medical history and treatment plan.

Common Causes of Abnormal Results

Abnormal results could be due to recent opioid use (including tapentadol), improper metabolism, or interactions with other medications. If you’re taking other painkillers, antidepressants, or sedatives, let your doctor know to avoid false positives or negatives.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Opioid Metabolites Panel

Frequently asked questions

What does this test measure?
This test measures the concentration of two metabolites—tapentadol and nortapentadol—in your urine. These metabolites are breakdown products of the opioid tapentadol and are used to assess drug processing and potential misuse.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on the lab. Your healthcare provider will contact you once they’re ready.
Can I drink alcohol before this test?
Avoid alcohol for 24 hours before testing, as it may interfere with the test results. Follow any specific instructions your doctor provides.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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