Test Directory

Test Code
CBARB
Test Name
Barbiturates, Quantitative, Urine
CPT Codes
AMA 80345, CMS G0480
Expected Turnaround Time
1 - 5 days
Clinical Utility

Useful in determining the use or abuse of Barbiturates.

 

Testing includes identification and quantitation of:

  • Butalbital
  • Phenobarbital
  • Secobarbital
Specimen and Container Info

Preferred Specimen Type: Urine 

Preferred Collection Container: Plastic Urine Container (Preservative Free) 

Desired Specimen Volume: 10 mL 

Transport Instructions

Transport to the laboratory refrigerated.

Stability Requirements

Room Temperature

  7 Days

Refrigerated

 7 Days 

Causes for Rejection

Urine specimens received in tubes containing preservatives will be rejected.

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

Analyte

Cutoff Concentration (ng/mL)

Butalbital

200

Phenobarbital

200

Secobarbital

200

Performing Location
Roble Road Core Laboratory
Alternate Names

Barbiturates Alternate Names:

  • Butalbital
  • Fioricet
  • Luminal
  • Phenobarb
  • Phenobarbital
  • Phenobarbitone
  • Secobarbital
  • Seconal
  • Solfoton
Testing Schedule
Routine, 2 times per week