4metphenethacetfentanylurcfmmcnc
This test detects a synthetic opioid drug (4-methylphenethylacetylfentanyl) in urine to help identify drug use or exposure.
{"Detects a synthetic fentanyl-like drug in urine","Used for clinical drug testing or forensic investigations","A positive result indicates recent use of this synthetic opioid"}
Key facts at a glance
- LOINC
- 93472-9
- Short code
- 4-MPEAFENT-U
- Synonyms
- 4-MetPhenEthAcetFentanyl Ur Cfm-mCnc
- Category
- chemistry
- Sample
- urine
- Container
- Sterile plastic urine container with leak-proof lid
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–120 years
- Method
- confirm
- CPT
- 80307
- SNOMED
- 78018006
- Specimen volume
- Minimum 5 mL, preferred 10-15 mL
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-20°C): 30 days
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 48–168 hours
- Order
- routine
What is this test?
This test looks for 4-methylphenethylacetylfentanyl in your urine. This is a synthetic opioid drug related to fentanyl, which is a powerful pain medication. 4-Methylphenethylacetylfentanyl is an designer drug that may be abused for its opioid effects. The test uses a confirmatory method, which is a highly accurate laboratory technique to identify the specific drug.
Why might I need this test?
Your healthcare provider may order this test if they suspect synthetic opioid use. It may be part of a routine drug screening panel, a pain management program, or a forensic investigation. The test can help determine if someone has been exposed to this specific synthetic opioid.
How is the test done?
A urine sample is collected in a clean container. The sample is then sent to a laboratory where it undergoes confirmatory testing using advanced techniques like mass spectrometry. This method can accurately identify even small amounts of the drug or its metabolites.
What do the results mean?
A positive result means that 4-methylphenethylacetylfentanyl was detected in your urine, indicating recent use of this synthetic opioid. A negative result means the drug was not detected at the time of testing. However, a negative result does not necessarily rule out drug use, as the drug may have been eliminated from the body.
Reference range
Not Detected (Cutoff: 0.5 ng/mL)N/A
Collect random urine specimen in sterile, labeled container. No special preparation required. Inform collecting personnel of any medications or supplements being taken. Donor should refrain from excessive fluid intake prior to collection to avoid dilution.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
4-Methylphenethylacetylfentanyl is a synthetic opioid that can be abused for its narcotic effects. Like other synthetic opioids, it can cause respiratory depression, sedation, and in severe cases, overdose or death. This test helps healthcare providers identify exposure to this potentially dangerous substance, which is important for patient safety, addiction monitoring, and forensic purposes.
Frequently asked questions
How long does 4-methylphenethylacetylfentanyl stay in urine?
Is this test painful?
Will this test show other drugs?
Do I need to prepare for the test?
Sources
- 1
- 2
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