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Available Tests

  • Barbiturate, Urine (Screen)

Barbiturate, Urine (Screen)

Specimen Type

Test ID   LAB364
CPT Code(s)   80301
Group/Individual Test   Individual
Laboratory   Core Laboratory
Tube Station   Routine: 30
STAT: 888
Specimen Routine: 50 mL random urine (no preservative); See important comments
  micro: 4 mL random urine (no preservative)
Availability Routine: 24 hrs/day
  STAT: Yes
Turnaround Time   Routine: 2 hours
STAT: 1 hr.
Reference Range   Undefined

Internal Reference Testing Specimen Handling Instructions:

Centrifuge, aliquot, refrigerate


The reference range is undefined.

Barbituates may be detected in the urine 1-21 days after ingestion. The urine barbiturate screening test detects the presence of the barbiturate secobarbital at a concentration of 200 ng/mL or greater. Other barbiturates are detected: call laboratory for information regarding a specific barbiturate. This method is unable to distinguish between specific barbituates and should be used for screening purposes only.   Confirmation testing should be considered for positive screens. 

Reviewed by gloria_crawford on June 16, 2016

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