Adrenocorticotropic Hormone

ACTH (Adrenocorticotropic Hormone) Test

Why It Is Done

A test to measure ACTH is done to check for:

• A problem with the adrenal glands or pituitary gland. A high level of ACTH and a low level of cortisol (or low ACTH and high cortisol levels) could be caused by a problem with the adrenal glands. Low levels of ACTH and cortisol could be caused by a problem with the pituitary gland.
• Overproduction of ACTH. This may be caused by overactive adrenal glands and the release of too much cortisol (one form of Cushing's syndrome).

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Author:	Sydney Youngerman-Cole, RN, BSN, RNC	Last Updated: August 3, 2006
Medical Review:	Caroline S. Rhoads, MD - Internal Medicine David C.W. Lau, MD, PhD, FRCPC - Endocrinology & Metabolism
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