Test Overview
Test Methodology

Liquid Chromatography - Tandem Mass Spectrometry (LC-MS/MS)

Test Usage

Monitor therapeutic drug level.

Reference Range *

Therapeutic 1 - 3 mcg/mL. Toxic: Greater than 3.5 mcg/mL.

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

Test Details
Days Set Up
Monday, Wednesday, Friday
Analytic Time

8 hours

Soft Order Code
FCBZN
MiChart Code
Carbamazepine Level, Free
Synonyms
  • Tegretol
  • Tegretol, Protein Free
  • Free Tegretol
  • Free Carbamazepine
Laboratory
Chemical Pathology
Section
Drug Analysis
Specimen Requirements
Collection Instructions

Collect blood in a red top tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Alternate Specimen
Heparinized (green top) or EDTA (lavender top) plasma is acceptable.
Normal Volume
2 mL serum
Minimum Volume
0.3 mL serum
Billing
CPT Code
80157
Fee Code
33193
LOINC
3433-0
NY State Approved
No