Sign in →

Test ID BLOD1284 Fentanyl, Serum

Reporting Name

Fentanyl and Metabolites, S

Useful For

Monitoring fentanyl therapy

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Serum Red

Specimen Required

Container/Tube: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 2.3 mL

Collection Instructions:

1. Spin down and remove serum from red blood cells within 2 hours of draw.

2. Aliquot serum to submission container.

Specimen Minimum Volume

1.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Red Frozen (preferred) 28 days
  Refrigerated  14 days
  Ambient  72 hours

Reference Values

Not applicable

Day(s) and Time(s) Performed

Tuesday; 8 a.m.

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


G0480 (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FENTS Fentanyl and Metabolites, S In Process


Result ID Test Result Name Result LOINC Value
31829 Norfentanyl 11074-2
31830 Fentanyl 3636-8
31832 Chain of Custody No LOINC Needed

Reject Due To


Mild OK; Gross OK


Mild OK; Gross OK


Mild OK; Gross OK


Serum gel tube

Method Name

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)