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Norfentanyl in Saliva (Mass Concentration)

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

This test measures the amount of norfentanyl, a metabolite of fentanyl, in your saliva. It helps assess recent fentanyl exposure or use.

Quick summary

["This test checks for recent fentanyl exposure through saliva, useful in monitoring or confirming use."]

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

Key facts at a glance

LOINC
78867-9
Short code
Norfentanyl CtO Sal Cfm-mCnc
Synonyms
Norfentanyl CtO Sal Cfm-mCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
CPT
86430
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

Your healthcare provider may order this test if you’re suspected of fentanyl exposure, misuse, or to monitor treatment involving fentanyl or its metabolites. Saliva testing is often used for recent use detection due to its quick results and non-invasive nature.

What to Expect Before the Test

No special preparation is needed. You’ll provide a saliva sample, typically collected by gently rubbing your gums or cheek. Avoid eating, drinking, or chewing gum for at least 30 minutes before testing to ensure accurate results.

What the Test Results Mean

Results are interpreted by your healthcare provider based on clinical context, such as symptoms, medical history, or other test results. High levels may indicate recent fentanyl use, while low or absent levels suggest no recent exposure.

Possible Side Effects or Considerations

There are usually no side effects from this test. However, saliva testing may not detect long-term exposure or higher doses, as it reflects recent use only.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Norfentanyl levels in saliva can help identify recent fentanyl exposure, which is critical for managing overdose risks, assessing treatment efficacy, or guiding medical decisions. It’s particularly useful in settings like emergency care, addiction treatment, or workplace safety programs.

Short name

Norfentanyl Saliva Test

Frequently asked questions

How long does it take to get results from this test?
Results are typically available within a few hours to a couple of days, depending on the lab’s processing time. Your healthcare provider will contact you once they have the results.
Can I eat or drink before this test?
Yes, but avoid eating, drinking, or chewing gum for about 30 minutes before collecting the saliva sample to ensure accurate results.
Is this test covered by insurance?
Coverage depends on your insurance plan and the reason for the test. Check with your insurance provider or ask your healthcare provider for details about costs and coverage.
  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