CARBAMAZEPINE-10, 11-EPOXIDE SERUM

General Information

HLAB/HOL Code: CABEP
UPHSM LIS Test #: 8064
Schedule: Wednesday
Testing Time: Same day/1 day
Testing Lab: Mayo Labs

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 2.0 mL Serum
Temperature: Refrigerate
Tube Type: 1 Red top tube
Collection Info:
Draw blood 12 hours (trough value) after last dose.
Serum gel tube cause for rejection

Specimen Acceptability

Specimen stability:
Refrigerated (preferred): 14 days
Ambient: 14 days
Frozen: 14 days

Methods

Carbamazepine, Total: Immunoassay
Carb-10, 11-Epoxide: High-Performance Liquid Chromatography (HPLC)

CPT Codes

80156 Carbamazepine, total
80299 Carbamazepine-10,11-Epoxide

* The CPT codes provided 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 payer being billed.

Reference Range

CARBAMAZEPINE, TOTAL
Therapeutic: 4.0-12.0 mcg/mL
Critical value: > or = 15.0 mcg/mL

CARBAMAZEPINE-10,11-EPOXIDE
Therapeutic concentration: 0.4-4.0 mcg/mL
Toxic concentration: > or = 8.0 mcg/mL