Test Overview
Test Methodology

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

Test Usage

Assessing toxicity or monitoring possible abuse.

Reference Range *

8.0 - 17.0 mcg/mL; Critical Value: 30 mcg/mL.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Concentration at which toxicity occurs varies and should be interpreted in light of clinical situation.

Test Details
Analytic Time

3 - 5 days

Soft Order Code
MMLR
Synonyms
  • Butesol
  • Butisol
  • Phrenilin
  • BUT
  • BUTABARBITAL, SERUM
Laboratory
Sendout
Reference Laboratory
Mayo Wild 80 (ZW80) (MedTox 16)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect blood in a red top or green top tube. Centrifuge, aliquot serum or plasma into a plastic vial and refrigerate.

Alternate Specimen
Serum or heparinized plasma preferred; other specimens can also be analyzed.
Normal Volume
2 mL serum or plasma
Minimum Volume
0.5 mL serum or plasma
Additional Information

Butabarbital (Butisol) is an intermediate-acting barbiturate with sedative-hypnotic activity. Toxic mainifestations can include respiratory depression, acidosis and hypoxia, hypothermia, hypotension, cardiac depression, shock, and coma. Test sent to Mayo Medical Laboratories; performed by MedTox Laboratories.

Billing
CPT Code
80345
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