Test Overview

Test Methodology

Gas Chromatography/Flame Ionization Detection (GC-FID)

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





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Laboratory Reference

Mayo Wild 80 (ZW80) (MedTox 16)

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Specimen Requirements

Offsite Collection Instructions

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

Normal Volume

2 mL serum or plasma

Minimum Volume

0.3 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.

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