ARUP's Laboratory Test Directory

Clorazepate (Assayed as Nordiazepam) : 0090196

Mnemonic: CLORAZ

Methodology: Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed: Sun-Sat
Reported: 1-2 days
Specimen Required: Collect: Plain red. Also acceptable: Lavender (K2 or K3EDTA) or pink (K2EDTA).

Specimen Preparation: Separate serum or plasma from cells within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Whole blood. Gel separator tubes, light blue (citrate), or yellow (SPS or ACD solution).

Stability (collection to initiation of testing): After separation from cells: Ambient: 1 week; Refrigerated: 1 week; Frozen: 2 months
Reference Interval:
Dose-Related Range:
0.1-2.2 µg/mL based on common dosage amounts.
Toxic: >2.5µg/mL
Interpretive Data: Clorazepate is assayed as nordiazepam.
CPT Code(s): 80154
Cross References: Clorazepate (Tranxene {R}) (Clorazepate (Assayed as Nordiazepam)), Nordiazepam (Clorazepate (Assayed as Nordiazepam)), Novo-Clopate (Clorazepate (Assayed as Nordiazepam)), Tranxene (Clorazepate (Assayed as Nordiazepam))