Barbiturates, GCMS, Bile (Postmortem only)

Test Code

CPT Codes

Amobarbital, Butabarbital, Butalbital, Pentobarbital, Phenobarbital, Secobarbital

Preferred Specimen
20 mL postmortem bile, submitted in a plastic, leak-proof container

Minimum Volume
5 mL

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 1 year

Gas Chromatography Mass Spectrometry

Setup Schedule
Set up: Mon-Fri; Report available: 3-4 days

Reference Range
See Laboratory Report

Clinical Significance
Extensively used for hypnotics, sedatives, and anesthetics. Readily absorbed from stomach. Duration of action of Barbiturates in therapeutic doses varies from: 8-16 hours (long acting e.g., phenobarbital); 4-8 hours (intermediate acting e.g., Amobarbital); 3-6 hours (short acting e.g., Pentobarbital). Barbiturates may enhance other CNS depressants, such as Ethanol, Morphine derivatives, tranquilizers, and Resperine.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.