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Available Tests

  • Benzodiazepine, Urine (Screen)

Benzodiazepine, Urine (Screen)

Yellow Top urine Tube

Specimen Type

Test ID   LAB367
CPT Code(s)   80301
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   Routine: 30
STAT: 888
Specimen Routine: 10 mL random urine in Yellow Top Urine Tube (No Preservative/Additive) ; See important comments

10 ml random urine in sterile specimen cup is acceptable.
  micro: 1 mL random urine in Yellow Top Urine Tube (No Preservative/Additive)
Availability Routine: 24 hrs/day
  STAT: Yes
Turnaround Time   Routine: 2 hours
STAT: 1 hour
Reference Range   Undefined

Internal Reference Testing Specimen Handling Instructions:

Centrifuge, aliquot, refrigerate


The reference range is undefined.

Benzodiazepine metabolites may be detected up to 72 hours after ingestion depending upon the specific benzodiazepine. The urine benzodiazepine screening test detects the presence of the benzodiazepine metabolite diazepam at a concentration of 200 ng/mL or greater. Other benzodiazepine metabolites are detected, call laboratory for information regarding a specific benzodiazepine. This method is unable to distinguish between specific benzodiazepines and should be used for screening.   Confirmation testing should be considered for positive screens; See Benzodiazepines, Confirmation.Note: These results are for medical purposes only.

Reviewed by cmparker on July 11, 2017

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514