Description

An ACTH, or adrenocorticotropic hormone test, measures the level of hormone from the pituitary gland that controls the adrenal glands.

ACTH tests help diagnose and monitor conditions that affect cortisol levels, such as disorders of the pituitary and adrenal glands. For example, high levels of ACTH may indicate Cushing's disease, a tumor in the pituitary gland, or Addison's disease, which is when the adrenal glands fail. Low levels of ACTH may indicate damage to the pituitary gland, an adrenal tumor, or the use of corticosteroid medicines.

Fasting recommended.