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Test Name:Carbamazepine
Epic Order Code:LAB21  
CPT Code:80156  
Specimen(s) Type:Serum  
Acceptable Container(s):Top is red.
Testing Schedule:24 hrs/day, 7 days/week
Turn Around Time:STAT: 1 hour  
 Routine: 2 hours  
Collection Information:No special patient preparation is required. Obtain specimen by standard collection procedures.
Transport Information:Deliver to lab immediately. All specimens must be signed into the laboratory.
Reference Clients:If unable to deliver to the lab within 1 hour, centrifuge the specimen and remove serum from the red cells. Store and transport at 2-8° C. Specimen must be received in the lab within 24 hours.
Causes for Rejection:Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport.
Reference Range:Therapeutic:4.0 - 12.0 µg/mL
 Potentially toxic:>12.1 µg/mL
Additional Information:The possibility exists for interference by human anti-mouse antibodies (HAMA) in the sample, which could cause falsely elevated results.
 The incidence of patients with antibodies to E.Coli ß-galactosidase is extremely low. However, some samples containing such antibodies can result in artificially high carbamazepine results that do not fit the clinical profile.