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HelpTest Code FENTU Fentanyl with Metabolite Confirmation, Random, Urine
Reporting Name
Fentanyl w/metabolite Conf, UUseful For
Detection and confirmation of illicit drug use involving fentanyl
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
UrineOrdering Guidance
For situations where chain of custody is required, a Chain of Custody Kit (T282) is available. For chain-of-custody testing, order FENTX / Fentanyl with Metabolite Confirmation, Chain of Custody, Random, Urine.
Additional Testing Requirements
If urine creatinine is required or adulteration of the specimen is suspected, the following test should also be ordered, ADULT / Adulterants Survey, Random, Urine.
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Clean, plastic urine collection container
Submission Container/Tube: Plastic, 5-mL tube
Specimen Volume: 5 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Additional Information:
1. No specimen substitutions.
2. STAT requests are not accepted for this procedure.
3. Submitting less than 5 mL will compromise our ability to perform all necessary testing.
Specimen Minimum Volume
2.1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Refrigerated (preferred) | 28 days |
| Frozen | 28 days | |
| Ambient | 21 days |
Reference Values
Negative
Positive results are reported with a quantitative result.
Cutoff concentrations by liquid chromatography tandem mass spectrometry:
Fentanyl: 0.2 ng/mL
Norfentanyl: 1.0 ng/mL
Day(s) Performed
Monday through Friday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
G0480
80354 (if appropriate for select payers)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FENTU | Fentanyl w/metabolite Conf, U | 67822-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 45530 | Fentanyl by LC-MS/MS | 58381-5 |
| 45531 | Norfentanyl by LC-MS/MS | 58383-1 |
| 45532 | Fentanyl Interpretation | 69050-3 |
Report Available
4 to 7 daysReject Due To
| Gross hemolysis | OK |
| Gross icterus | Reject |
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.