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Test Code LAB30 Phenobarbital

Department

CHEMISTRY

Collection Requirements

Trough is drawn immediately prior to next dose.

Primary Collection Container

Green PST (Lithium Heparin)

Alternate Collection Container

Green Microtainer PST

Transport

Plasma refrigerated

Preferred Transport Temperature

Refrigerated

Processing

Centrifuge, separate from gel if testing delayed more then 8 hours.

Stability

Refrigerated: 48 hours

If testing is delayed longer than 8 hours, plasma must be removed from gel.

Minimum Testing Volume

0.5 mL

Reference Range

15-40 mcg/mL

Methodology

Roche c503 The assay is based on the kinetic interaction of microparticles in a solution (KIMS)

Performed

Sunday – Saturday

Reported

As completed

CPT Codes

80184

Unacceptable Conditions

Specimen stored for longer than 8 hours on gel.