Benzodiazepines, Serum [70071X]

Test Code

CPT Codes

Alprazolam, Alpha-Hydroxyalprazolam, Alpha-Hydroxytriazolam, Chlordiazepoxide, Clonazepam, Desalkylflurazepam, Diazepam, Lorazepam, Midazolam, Norchlordiazepoxide, Nordiazepam, Oxazepam, Temazepam, Triazolam

Preferred Specimen
2 mL serum collected in a red-top tube (no gel)

Minimum Volume
1 mL

Transport Container
Plastic screw-cap vial

Transport Temperature

Specimen Stability
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: 14 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gel barrier/Serum Separator Tube


Chromatography/Mass Spectrometry

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Tues, Thurs, Sat a.m.; Report available: 4 days

Reference Range
See Laboratory Report

Clinical Significance
Benzodiazepines are widely used as anxiolytics, sedative-hypnotics, muscle relaxants and anticonvulsants.

Performing Laboratory
Quest Diagnostics Nichols Institute Valencia 
27027 Tourney Road
Valencia, CA 91355

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.