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HelpTest Code FENTS Fentanyl, Serum
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Fentanyl and Metabolites, SSpecimen Type
Serum RedSpecimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube: Red top (Serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 2.3 mL
Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.
Reject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Frozen (preferred) | 28 days | |
| Refrigerated | 14 days | ||
| Ambient | 72 hours |
Specimen Minimum Volume
1.25 mL
Day(s) Performed
Tuesday, Thursday
Specimen Retention Time
14 daysReport Available
2 to 7 daysReference Values
Not applicable
Useful For
Monitoring fentanyl therapy
CPT Code Information
80354
G0480 (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| FENTS | Fentanyl and Metabolites, S | 81275-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 31829 | Norfentanyl | 11074-2 |
| 31830 | Fentanyl | 3636-8 |
| 31832 | Chain of Custody | 77202-0 |
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.