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.

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