Test Overview
Test Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Test Usage
Therapeutic drug monitoring.
Reference Range *
Flurazepam: 0 - 30 ng/mL, critical value 500 ng/mL; Desalkyflurazepam: 30 - 150 ng/mL, critical value 500 ng/mL; Flurazepam and Desalkyflurazepam: 30 - 180 ng/mL, critical value 1000 ng/mL.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Daily
Analytic Time
5 - 6 days
Soft Order Code
FFLUR
MiChart Code
Flurazepam Level
Synonyms
- FFLURZ
- FLURAZEPAM, DESALKYLFLURAZEPAM
- Dalmane
Laboratory
Sendout
Reference Laboratory
Mayo FFLUR (90091) (MedTox 53)
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect specimen in a red top or green top tube. Centrifuge, aliquot serum or plasma into a plastic vial and freeze.
Normal Volume
2 mL serum or plasma
Minimum Volume
0.5 mL serum or plasma
Additional Information
Test sent to Mayo Medical Laboratories; performed by MedTox Laboratories.
Billing
CPT Code
80346
Fee Code
22021