Update Type: Test Down or Delayed
Test Updated: 12/21/2022
Test Overview
Test Methodology

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

Test Usage

Monitoring of fentanyl therapy.

Test Details
Days Set Up
Monday, Wednesday
Analytic Time

3 - 8 days

Soft Order Code
FENTS
MiChart Code
Fentanyl (Sublimaze), Level
Synonyms
  • FENTS
  • Fentanyl and Metabolite, Serum
  • Sublimaze
  • Innovar
Laboratory
Sendout
Reference Laboratory
Mayo FENTS (8965)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial and freeze within 2 hours of collection.

Normal Volume
2.3 mL serum
Rejection Criteria
SST tube not acceptable.
Additional Information

Test sent to Mayo Clinic Laboratories.

Billing
CPT Code
80354
Fee Code
21581