ARUP's Laboratory Test Directory

Diazepam and Nordiazepam : 0090076

Mnemonic: DIAZ

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:
 
Test Number Components Dose-Related Range
 Diazepam0.2-1.0 µg/mL - Based on normal dosage amounts
 Nordiazepam0.06-1.80 µg/mL - Based on normal dosage amounts
Toxic: > 2.50 µg/mL

CPT Code(s): 80154 x2
Cross References: Diastat (Diazepam & Nordiazepam), Diazemuls (Diazepam & Nordiazepam), Diazepam and Metabolite (Diazepam & Nordiazepam), Nordiazepam (Diazepam & Nordiazepam), Stesolid (Diazepam & Nordiazepam), T-Quil (Diazepam & Nordiazepam), Valium (Diazepam & Nordiazepam), Valrelase (Diazepam & Nordiazepam), Zetran (Diazepam & Nordiazepam)