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Labcorp Oklahoma, Inc.
Test Directory


Carbamazepine, Free & Total

Order Name CARBA FR T
Test Number: 2070300
Revision Date 03/15/2023
Test Name Methodology LOINC Code
Carbamazepine, Free & Total
Immunoassay (IA)  
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 3 mL (1 mL) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Instructions Specimen Type: Red-top tube or green-top (heparin) tube.
Specimen Storage: Refrigerate
Specimen Collection: Draw just prior to next dose. Transfer separated serum/plasma to a plastic transport tube. Do not use a gel-barrier tube; the use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to absorption may be clinically significant.
Expected TAT Setup and reported Monday thru Friday on 2nd shift and Sunday 1st shift  
Notes Labcorp Test Code: 074195
CPT Code(s) 80156; 80157
Lab Section Reference Lab