Diazepam and Nordiazepam
0090076
Ordering Recommendation
 
Mnemonic
DIAZ
Methodology
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed
Tue, Fri
Reported
1-5 days  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
Timing of specimen collection: Pre-dose (trough) draw - At steady state concentration  
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).  
Remarks
  
Stability
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
 NordiazepamEffective November 18, 2013
0.1-​1.5 µg/mL -​ Based on normal dosage amounts
Toxic: Greater than 2.5 µg/mL
Interpretive Data
Adverse effects may include drowsiness, fatigue, ataxia and muscle weakness.  
Note
 
CPT Code(s)
80154 x2
Components
Component Test Code*Component Chart Name
0090075Diazepam
0090195Nordiazepam
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Benzodiazepines
  • Clorazepate
  • Diastat
  • Diazemuls
  • Diazepam and Metabolite
  • Nordiazepam
  • Stesolid
  • T-Quil
  • Tranxene
  • Valium
  • Valrelease
  • Zetran