Sign in →

Test Code PENTS Pentobarbital, Serum

Reporting Name

Pentobarbital, S

Useful For

Monitoring of pentobarbital therapy treatment

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Serum Red

Specimen Required

Container/Tube: Red top

Specimen Volume: 2 mL

Collection Instructions: Spin down within 2 hours of draw.

Specimen Minimum Volume

0.7 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Red Refrigerated (preferred) 14 days
  Ambient  14 days
  Frozen  14 days

Reference Values

Therapeutic range

Hypnotic: 1-5 mcg/mL

Therapeutic coma: 20-50 mcg/mL

Reducing intracranial pressure: 30-40 mcg/mL

This degree of sedation requires artificial respiratory support.

Toxic concentration: >10 mcg/mL

Day(s) and Time(s) Performed


Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


G0480 (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PENTS Pentobarbital, S 3924-8


Result ID Test Result Name Result LOINC Value
8239 Pentobarbital, S 3924-8

Method Name

Gas Chromatography-Mass Spectrometry (GC-MS)

Barnes-Jewish Hospital Additional Information:

For BJH Laboratory Use Only

Laboratory Processing Instructions:
BJH Chemistry will forward to the performing laboratory.