Cortisol is a hormone produced by the adrenal glands. It is often referred to as the "stress hormone" because its production is increased in response to stress. Cortisol plays an important role in numerous bodily functions, including regulating metabolism, controlling inflammation, modulating the immune system, regulating blood sugar, regulating blood pressure, helping to control the sleep-wake cycle, and aiding in the body's stress response.

Cortisol levels in the body are regulated through a complex feedback system known as the hypothalamic-pituitary-adrenal (HPA) axis. In order to maintain optimal cortisol levels, the hypothalamus, pituitary gland, and adrenal glands must all be functioning properly. Chronically elevated levels of cortisol (Cushing's syndrome) can lead to weight gain, muscle loss, high blood pressure, and immune system suppression. Low levels of cortisol, or adrenal insufficiency, can lead to fatigue, weight loss, and low blood pressure.

Who should take this test?

Cortisol testing is recommended for individuals exhibiting symptoms of high or low cortisol, including high or low blood pressure and weight gain or loss.

What is included in this test?

This blood test measures:

• Cortisol

How will taking this test benefit me?

Maintaining an optimal cortisol balance is vital for your well-being, as an excess or deficiency of cortisol production can lead to health complications. A cortisol test enables the diagnosis of disorders such as Cushing's syndrome and adrenal insufficiency, which can then be managed with medication.