Anticonvulsant Panel 1

Test Code

7311

CPT Codes
80184, 80185

Includes

Phenytoin and Phenobarbital

Preferred Specimen

1 mL serum collected in a red-top tube (no gel)

Patient Preparation
Collect just prior to next dose. For patients receiving fosphenytoin therapy, collect as a trough at least 2 hours after IV infusion or at least 4 hours after IM injection.

Minimum Volume

0.4 mL

Other Acceptable Specimens

Plasma collected in: Sodium heparin (green-top) tube, lithium heparin (green-top) tube, or EDTA (lavender-top) tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Serum Separator Tube (SST^®)

Methodology
Immunoassay (IA)

Setup Schedule

Set up and Report available: See individual tests

Reference Range

Phenytoin	10.0-20.0 mg/L
Phenobarbital	15.0-40.0 mg/L

Clinical Significance

See individual tests.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.