DIAZEPAM

Test Documentation
Components
Includes Diazepam and Nordiazepam (metabolite)

Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate and send 1.0 mL serum (0.2 mL minimum) refrigerated in a screw-capped plastic vial.

Rejection Criteria
SST

Methodology
Liquid Chromatography/Tandem Mass Spectrometry

Stability
Room Temperature: 48 hours; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Diazepam: 100–1000 ng/mL
Nordiazepam: 100–1000 ng/mL
Toxic: Sum >5000 ng/mL

Performed
Monday, Wednesday, Friday

Turnaround Time2-3 days
Test CodeDIAZE
CPT-4 Code (s)
80346 (G0480)
LOINC Codes
Diazepam   3548-5  
Nordiazepam   3537-8  

Warde
Medical
Laboratory