Diazepam + Nordiazepam
100 - 1500
2 (1) mL
Refrigerated - 5 Day(s)/Frozen - 14 Day(s)
Therapeutic drug monitoring of anxiolytic drug. Nordiazepam is the active metabolite of the parent drug. Elimination half-life is 20-90 hours.
Serum separator tubes are not acceptable. Use polypropylene tubes
and ship on cold pack by overnight courier.
Patient Preparation: Collect at trough concentration, i.e.,
immediately before the administration of the next dose.
Specimen Stability: Room temperature: unacceptable
Tuesday, Thursday, Saturday
Reported (Analytical Time)
The CPT codes provided are based on AMA guidelines and are for informational purposes only.
CPT coding is the sole responsibility of the billing party.
Please direct any questions regarding coding to the payer being billed.
Transport Temperature: Frozen
Methodology: Chromotography/Mass Spectrometry, Calculation Reject Criteria: Serum Separator Tube
© 1996 - 2019
Quest Diagnostics Nichols Institute of Valencia
For test information, please call Client Services at 800-421-4449.