Catecholamines Total, 24-Hours Urine analysis is a test used to measure catecholamine levels, which are hormones secreted by the adrenal glands and play an important role in the body's stress response. The test involves measuring amounts of dopamine, norepinephrine, and epinephrine in a urine sample collected over 24 hours. The sample collection is done carefully to ensure reliable results, with urine collected in a single container and the start and end times of collection recorded. This test is a valuable tool for diagnosing various health conditions, such as neurogenic tumors (like pheochromocytoma) and adrenal gland disorders. Catecholamine levels help identify potential causes of high blood pressure, rapid heartbeat, or anxiety symptoms, enabling doctors to make appropriate treatment decisions based on the results. This test is considered an important part of evaluating hormonal function and overall health.