ARUP's Laboratory Test Directory

Prazepam (Assayed as Nordiazepam) : 0090672

Mnemonic: PRAZE

Methodology: Quantitative Gas Chromatography
Performed: Sun, Tue, Thu
Reported: 1-4 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:
Nordiazepam: 0.60-1.50 µg/mL
Toxic: > 2.00 µg/mL
Interpretive Data: Prazepam is not detected in serum due to its rapid metabolism to nordiazepam. Prazepam dosage to achieve therapeutic results is not well defined. Following oral administration of 20 mg, three times a day for three days, plasma concentrations of nordiazepam averaged 0.8 µg/mL, 12 hours after final dose.
CPT Code(s): 80154
Cross References: Centrax (Prazepam (Assayed as Nordiazepam)), Verstran (Prazepam (Assayed as Nordiazepam))
 
 

 

 

 
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