Why do they test for tricyclic antidepressants?

Tricyclic antidepressants (TCAs) are tested for primarily to monitor therapeutic levels, ensure patient safety, and assess for potential overdose. Testing can help identify drug interactions or side effects, as TCAs can have significant cardiovascular effects. Additionally, in cases of suspected poisoning or overdose, testing is crucial for guiding treatment decisions. Overall, monitoring TCA levels helps optimize treatment and minimize risks associated with these medications.