Test Overview
Test Methodology

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Test Usage

Monitor therapeutic drug levels.

Reference Range *

Diazepam and Nordiazepam: 200 - 2,500 ng/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Tuesday
Analytic Time

2 - 8 days

Soft Order Code
DIA
MiChart Code
Diazepam Level
Synonyms
  • Clorazate
  • Clorazepate Dipotassium
  • Tranxene
  • Valium
  • DIAZEPAM/NORDIAZEPAM, SERUM
  • DIA+NORDIA
  • DIAZEPAM
  • NORDIA
  • DIAZEPAM + NORDIAZEPAM
  • NORDIAZEPAM
Laboratory
Sendout
Reference Laboratory
Mayo DIA (8629)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in a red top tube; do not use SST tube. Centrifuge and aliquot serum into plastic vial. Refrigerate (preferred), freeze or store at room temperature.

Rejection Criteria
SST tube not acceptable.
Yellow Top Tube
Red Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.3 mL serum
Additional Information

Test sent to Mayo Clinic Laboratories.

Billing
CPT Code
80346
Fee Code
20010
LOINC
Z10-9
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