Bupropion, Serum analysis is a laboratory test used to measure levels of the medication bupropion in blood serum. Bupropion is used to treat depression and to assist with smoking cessation, and it works by affecting certain chemicals in the brain. This test is usually performed to evaluate treatment effectiveness and ensure that bupropion levels in the blood are within the optimal range, helping to avoid potential side effects or inadequate therapeutic response. It is also used to monitor dosing, especially in patients with certain medical conditions or those taking other medications that may interact with bupropion. The results help physicians adjust dosages and better guide treatment to achieve the best outcomes for patients.