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HelpTest ID BUTAS Butalbital, Serum
Useful For
Monitoring butalbital therapy
Method Name
Gas Chromatography-Mass Spectrometry (GC-MS)
Reporting Name
Butalbital, SSpecimen Type
Serum RedContainer/Tube: Red top
Specimen Volume: 1.5 mL
Collection Instructions: Spin down within 2 hours of draw.
Specimen Minimum Volume
0.6 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Refrigerated (preferred) | 14 days |
| Ambient | 14 days | |
| Frozen | 14 days |
Clinical Information
Butalbital is a short-acting barbiturate with hypnotic properties that is used in combination with other drugs such as acetaminophen, salicylate, caffeine, and codeine.(1)
Butalbital is administered orally. The duration of its hypnotic effect is about 3 to 4 hours. The drug distributes throughout the body, with a volume of distribution (Vd) of 0.8 L/kg, and about 26% of a dose is bound to plasma proteins. Butalbital's half-life is about 35 to 88 hours. Excretion occurs mainly in the urine.(1,2)
Reference Values
<10 mcg/mL
Cautions
No significant cautionary statements.
Day(s) Performed
Wednesday; 8 a.m.
Report Available
2 daysPerforming Laboratory
Mayo Medical Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.CPT Code Information
80345
G0480 (if appropriate)