Carbamazepine (Tegretol)

Cleveland Heartlab C, Test


CPT Code: 80156
Order Code: C2353
ABN Requirement: No
Synonyms: 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: Do not collect in gel separator tube. Draw immediately before next dose.

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


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

Causes for Rejection: Improper labeling; samples not stored properly; samples older than stability limits; SST (gel barrier) tube

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

Clinical Significance: The test is used to monitor therapeutic levels of carbamazepine (Tegretol).

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.