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HelpTest ID BTBAS Butabarbital, Serum
Method Name
Gas Chromatography Mass Spectrometry (GC-MS)
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube: Red top (serum gel/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 1.5 mL
Collection Instructions:
1. Draw blood immediately before the next scheduled dose.
2. Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.
Reporting Name
Butabarbital, SSpecimen Type
Serum RedSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum Red | Refrigerated (preferred) | 28 days |
| Ambient | 28 days | |
| Frozen | 28 days |
Report Available
3 to 9 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| BTBAS | Butabarbital, S | 16236-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 622885 | Butabarbital, S | 16236-2 |
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.
Useful For
Monitoring of butabarbital therapy
Day(s) Performed
Thursday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
80299
Specimen Minimum Volume
0.6 mL
Reference Values
Therapeutic range:
2.0-3.0 mcg/mL Hypnosis
25 mcg/mL Sedation/Sleep
>30 mcg/mL Coma
Toxic concentration: >50 mcg/mL
Cutoff concentrations by gas chromatography mass spectrometry:
Butabarbital: 0.5 ng/mL