Test Overview

Test Methodology

LC-MS/MS

Test Usage

Monitor therapeutic drug level.

Reference Range*

The concentration of carbamazepine epoxide is normally 10-40% that of the parent drug, but can be variable. During combination therapy the relative concentration of carbamazepine epoxide to carbamazepine may increase slightly.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details

Days Test Performed

Tuesday, Friday

Analytic Time

4 hours

Soft Order Code

CEPOX

MiChart Code

Carbamazepine Epoxide

Synonyms

Laboratory

Chemical Pathology

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Specimen Requirements

Offsite Collection Instructions

Collect blood in a red top tube; do not use SST. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Rejection Criteria

SST tube not acceptable.

Container

Normal Volume

3 mL serum

Minimum Volume

1 mL serum

Billing Information

Fee Codes

CPT Code

80156

LOINC

9415-1

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