The 24-Hour Urine Cortisol Test measures the amount of cortisol, the primary stress hormone, excreted in urine over a full day. Cortisol is produced by the adrenal glands and helps regulate metabolism, immune response, and stress levels. Abnormal cortisol levels can indicate Cushing’s syndrome, Addison’s disease, or adrenal gland dysfunction. This test provides valuable insights into adrenal health and helps doctors diagnose hormonal imbalances, monitor treatment, and manage stress-related conditions effectively.