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 Set Up
Tuesday, Friday
Analytic Time
4 hours
Soft Order Code
CEPOX
MiChart Code
Carbamazepine Epoxide
Synonyms
- CARBAMA EPOXIDE LEVEL
- Carbamazepine 10,11-epoxide
- Tegretol
- Tegretol Epoxide
- CEPOX
- CARBAMA EPOXIDE
Laboratory
Chemical Pathology
Section
Drug Analysis
Specimen Requirements
Collection Instructions
Collect blood in a red top tube; do not use SST. Centrifuge, aliquot serum into a plastic vial and refrigerate.
Alternate Specimen
Heparinized (green top) or EDTA (lavender top) plasma acceptable.
Rejection Criteria
SST tube not acceptable.
Normal Volume
3 mL serum
Minimum Volume
1 mL serum
Billing
CPT Code
80161
Fee Code
KA036
LOINC
9415-1