Days Set Up
Analytic Time

4 hours

MiChart Code
Pentobarbital Level
Soft Order Code

Test Updated:


Pentobarbital Level, Blood

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

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Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Gas Chromatography (GC)

Test Usage

Monitor drug levels during coma therapy

Reference Range

20-30 mcg/mL in coma therapy (upper limit of 30-40 mcg/mL for therapeutic induction of coma); Toxic Level: >60 mcg/mL.

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

Specimen Requirements

Collection Onsite

Collect blood in a red top or green tob tube; do not use SST tube.

Collection Offsite

Collect blood in a red top or green tob tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial, and refrigerate.

Red Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.5 mL serum

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.