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TEST ID BARBU Barbiturates Confirmation, Random, Urine

Reporting Name

Barbiturates Confirmation, U

Specimen Type

Urine


Ordering Guidance


For situations where chain of custody is required, a Chain-of-Custody Kit (T282) is available. For chain-of-custody testing, order BARBX / Barbiturates Confirmation, Chain of Custody, Random, Urine.

 

Additional drug panels and specific requests are available. Call 800-533-1710 or 507-266-5700.



Additional Testing Requirements


If urine creatinine is required or adulteration of the sample is suspected, also order ADULT / Adulterants Survey, Random, Urine in addition to this test.



Specimen Required


Supplies: Urine Tubes, 10 mL (T068)

Collection Container/Tube: Plastic urine container

Submission Container/Tube: Plastic, 10-mL urine tube

Specimen Volume: 10 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Additional Information:

1. No specimen substitutions.

2. STAT requests are not accepted for this test.


Specimen Minimum Volume

5 mL

Specimen Stability Information

Specimen Type Temperature Time
Urine Refrigerated (preferred) 14 days
  Frozen  14 days
  Ambient  72 hours

Method Name

Gas Chromatography Mass Spectrometry (GC-MS)

Reject Due To

Gross hemolysis OK
Gross icterus OK

Reference Values

Negative (Positive results are reported with a quantitative result)

 

Cutoff concentrations by gas chromatography mass spectrometry:

Butalbital: 100 ng/mL

 

Amobarbital: 100 ng/mL

 

Pentobarbital: 100 ng/mL

 

Secobarbital: 100 ng/mL

 

Phenobarbital: 100 ng/mL

Day(s) Performed

Monday, Wednesday, Friday

Report Available

3 to 5 days

Specimen Retention Time

14 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

G0480

80345 (if appropriate for select payers)

Clinical Toxicology CPT Code Client Guidance

Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen. 

Useful For

Detecting drug abuse involving barbiturates such as amobarbital, butalbital, pentobarbital, phenobarbital, and secobarbital

Clinical Information

Barbiturates represent a class of drugs that were originally introduced as sleep inducers. Butalbital is also used to control severe headaches. Mephobarbital and phenobarbital are frequently used to control major motor (grand mal) seizures. These drugs are commonly abused as "downers" to induce sleep after an amphetamine- or cocaine-induced "high."