Cortisol Serum Morning: 8am

The Cortisol, Serum (Morning Sample) test measures the levels of the cortisol hormone in the blood. Cortisol is a vital hormone produced by the adrenal glands in response to stress and plays an important role in various bodily functions such as metabolism, immune response, and the body’s stress response system.

This test is conducted during the morning because cortisol levels fluctuate throughout the day, typically peaking in the early morning and gradually declining throughout the day and then into the evening. By measuring the cortisol levels in the morning, the doctors can assess the body’s natural rhythm (circadian rhythm) and evaluate how well the adrenal glands and pituitary glands are working. Deranged cortisol levels can indicate conditions such as adrenal insufficiency (Addison’s disease), cortisol excess (Cushing’s syndrome), or other disorders affecting these glands. Additionally, this test helps diagnose and monitor conditions related to stress, sleep disorders, metabolism, and overall hormone balance.