Pentobarbital

Message

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

PENTOB

CPT Codes
80345 (HCPCS: G0480)

Preferred Specimen

3 mL serum collected in a red-top tube (no gel)

Patient Preparation
Collect just prior to next dose

Minimum Volume

1 mL

Other Acceptable Specimens

Plasma collected in: EDTA (lavender-top) tube, sodium heparin (green-top) tube, sodium heparin lead-free (tan-top) tube, lithium heparin (green-top) tube, EDTA (royal blue-top) tube, or fluoride/Oxalate (gray-top) tube

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: Not established

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Serum separator tube (SST) • Any other tube with additives

Methodology
Chromatography/Mass Spectrometry

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule

Daily

Report Available

4-5 days

Limitations

Drugs can be detected in the urine for 24 - 72 hours after ingestion and longer lasting drugs may be present 7 or more days after ingestion.

Reference Range

1.0-5.0 mg/L

Performing Laboratory

Quest Diagnostics Nichols Institute-Chantilly VA

14225 Newbrook Drive

Chantilly, VA 20151-2228

Last Updated: December 6, 2021

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.