Cortisol Test

A cortisol test is a blood test that measures the level of cortisol in the bloodstream. Cortisol is a hormone produced by the adrenal glands in response to stress. It helps regulate metabolism, reduce inflammation, and control blood pressure.

A cortisol test may be ordered by a healthcare provider to help diagnose conditions such as Addison's disease, Cushing's syndrome, or adrenal insufficiency. It may also be used to monitor treatment for these conditions or to assess stress levels in individuals experiencing symptoms such as fatigue, weakness, weight loss, or high blood pressure.

Before a cortisol test, it is important to follow any instructions provided by your healthcare provider, such as fasting before the test or avoiding certain medications that may affect cortisol levels. The test is typically performed by collecting a blood sample from a vein in the arm.

Results of a cortisol test can vary depending on the time of day the test is taken, as cortisol levels naturally fluctuate throughout the day. Your healthcare provider will interpret the results and discuss any necessary follow-up steps based on the findings.

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