PENTOBARBITAL

Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate and send 1.0 mL serum (0.2 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: EDTA, fluoride, heparin, oxalate

Rejection Criteria
SST

Methodology
High Performance Liquid Chromatography

Stability
Room Temperature: 48 hours; Refrigerated: 14 days; Frozen: 14 days

Reference Range
Prefers sleep: 10–15 µg/mL
Comatose reflexive: 15–20 µg/mL
Comatose are flexive: 25–30 µg/mL
Comatose with circulatory and/or respiratory difficulty: 40–50 µg/mL

Performed
Monday-Friday

Turnaround Time1-3 days
Test CodePENTO
CPT-4 Code (s)
80345 (G0480)
LOINC Codes
3924-8

Warde
Medical
Laboratory