The 24-Hour Urine Catecholamine Test measures the levels of catecholamines—hormones like adrenaline, noradrenaline, and dopamine—excreted in urine over a full day. These hormones are produced by the adrenal glands and play a key role in regulating stress response, blood pressure, and metabolism. Abnormal levels can indicate adrenal gland disorders, tumors (like pheochromocytoma), or other hormonal imbalances. This test provides crucial insights for healthcare providers to diagnose conditions early, monitor adrenal health, and guide effective treatment plans.