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Labcorp Oklahoma, Inc.
Test Directory


Index:

Carbamazepine (Tegretol)

Order Name TEGRETOL
Test Number: 4004800
Revision Date 04/30/2021
Test Name Methodology LOINC Code
Carbamazepine (Tegretol)
Enzyme Immunoassay 3432-2 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Alternate 1 1 mL (0.5) Serum Clot Activator SST Refrigerated
Instructions Draw before next dose.
Stability: Ambient 2 days, Refrigerated 7 days, Frozen 1 month
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-2 days  
Clinical Use Useful for monitoring patients with Tegretol toxicity. 
Notes Carbamazepine and its metabolite (10,11- Carbamazepine epoxide) are widely used for control of generalized tonic-clonic, partial-onset, complex and mixed seizure disorders. The metabolism of carbamazepine in epileptic patients has several different pathways that can be altered when the patient is co-medicated with other anticonvulsants and, therefore, it's therapeutic level should be monitored along with its metabolite in their free and protein bound states.
CPT Code(s) 80156
Lab Section Chemistry