Carbamazepine (Tegretol)

Cleveland Heartlab C, Test

CPT Code: 80156
Order Code: C2353
ABN Requirement: No
Synonyms: Carb; Tegretol
Specimen: Serum
Volume:  1.0 mL
Minimum Volume:  0.5 mL
Container: Red Top (no gel barrier) tube


  1. Collect and label sample according to standard protocols.
  2. Gently invert tube 5 times immediately after draw. DO NOT SHAKE.
  3. Allow blood to clot 30 minutes.
  4. Centrifuge for 10 minutes.
  5. Aliquot serum into a labeled transport tube and cap tightly.

Special Instructions: Sample should be collected immediately prior to the administration of the next dose of carbamazepine. Write the date and time of the last dose of carbamazepine on the requisition.

Transport: Store aliquoted serum at 2°C to 8°C after collection and ship the same day per packaging instructions provided with the Cleveland HeartLab shipping box.


Ambient (15-25°C): 2 days
Refrigerated (2-8°C): 7 days
Frozen (-20°C): 4 weeks
Deep Frozen (-70°C): 4 weeks

Causes for Rejection: Specimens other than serum; improper labeling; samples not stored properly; samples older than stability limits; serum from gel-barrier tube/SST

Methodology: Kinetic Interaction of Microparticles in a Solution

Turn Around Time: 2 to 3 days

Reference Range:

Age µg/mL
All Ages 4.0-12.0

Urgent Values:

Age µg/mL
All Ages >15.0

Use: The carbamazepine test is used to monitor therapeutic levels of carbamazepine.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.