PHENOBARBITAL

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.

Rejection Criteria
SST

Methodology
High Performance Liquid Chromatography

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

Reference Range
Therapeutic: 15–40 µg/mL
Toxic: >60 µg/mL

Performed
Monday-Friday

Turnaround Time1-3 days
Test CodePHENO
CPT-4 Code (s)
80184
LOINC Codes
3948-7

Warde
Medical
Laboratory