Final answer:
A complete blood count and liver function tests are important labs to monitor for adverse reactions to Tegretol, as the drug can affect blood cells and liver enzymes.
Step-by-step explanation:
The question concerns the identification of a lab test that would indicate an adverse reaction to the drug Tegretol (carbamazepine), which is commonly prescribed for conditions like epilepsy, trigeminal neuralgia, and bipolar disorder. Adverse reactions to Tegretol may manifest in several ways, but commonly monitored labs include a complete blood count (CBC), liver function tests (LFTs), and electrolyte panels, as Tegretol can affect blood cells and liver enzymes. Specifically, Tegretol can cause a decrease in white blood cells (leukopenia), anemia, or liver dysfunction. Regular monitoring of these labs is important for patients taking Tegretol to promptly identify any adverse reactions and prevent potential complications.