Phenobarbital, Unbound (Free) and Total, serum or plasma

CPT: 80184x2

Synonyms

Luminal®; PB

Expected Turnaround Time

1 day

Related Information

FDA Cleared

Specimen Requirements


Specimen

Serum or plasma

Volume

3 mL

Minimum Volume

1.2 mL

Container

Red-top (no additive) tube or green-top (heparin) tube. Gel-barrier tubes are not recommended.

Collection

Transfer separated serum or plasma to a plastic transport tube. Trough levels are most reproducible

Storage Instructions

Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.

Test Details


Use

Therapeutic Drug Management

Methodology

Ultrafiltration; Immunoassay (IA)

Reference Interval

Total: 15.0 - 40.0 µg/mL; Unbound: 6.0 - 20.0 µg/mL