CHLORDIAZEPOXIDE

Test Documentation
Components
Includes Norchlordiazepoxide

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. PROTECT FROM LIGHT.

Alternate Specimen
Plasma: EDTA, Fluoride, Oxalate

Rejection Criteria
SST tubes, not protected from light

Methodology
Liquid Chromotography/Tandem Mass Spectrometry

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

Reference Range
Chlordiazepoxide
   Therapeutic:   100–3000 ng/mL  
   Toxic Range:   >5000 ng/mL  
Norchlordiazepoxide:   100–1000 ng/mL  

Performed
Monday, Wednesday, Friday

Turnaround Time2-3 days
Test CodeCHLRP
CPT-4 Code (s)
80346 (G0480)
LOINC Codes
Chlordiazepoxide   3457-9  
Norchlordiazepoxide   3537-8  

Warde
Medical
Laboratory