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Alias Names: Tranxene / Nordiazepam
Methodology: Gas Chromatography (GC)
Edit Date: 6/11/2010
Performed: Daily
Released: 24-48 hours after setup at PeaceHealth Laboratories’ reference lab.
CPT Code: 80154-90
Specimen Collection Details
Collection: One 5 mL red top tube. Also acceptable: One 4 mL green top tube (sodium heparin), 4 mL lavender top tube (EDTA), or 4 mL grey top tube (potassium oxalate/ sodium fluoride). Do not use separator tubes (SST or PST) or gels.
Handling: Allow to clot, centrifuge and separate serum or plasma from cells. Refrigerate.
Stability: 7 days ambient, 7 days refrigerated, or 2 months frozen.
Standard Volume: 1.5 mL serum or plasma.
Minimum Volume: 0.5 mL serum or plasma.
Transport: Refrigerated.
Comments: Clorazepate is assayed as Nordiazepam.
Rejection Criteria: Use of SST or PST.

Reference Range:
Clorazepate dose related range: 0.1-2.2 ug/mL based on common dosage amounts.
Toxic: >2.5 ug/mL