Adrenocorticotropic Hormone (ACTH) Test
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About Our Adrenocorticotropic Hormone (ACTH) Test
This blood test measures levels of Adrenocorticotropic Hormone (ACTH).
Adrenocorticotropic hormone (ACTH or corticotropin) is a polypeptide hormone secreted the pituitary gland in response to the corticotropin-releasing hormone released by the hypothalamus. It stimulates the cortex of the adrenal gland, resulting in the synthesis of corticosteroids: mainly glucocorticoids, but also mineralcorticoids and, to a lesser extent, androgens.
Determination of ACTH is useful in differentiating between primary and secondary adrenocortical hypo- and hyperfunctional disorders: Addison's disease, Cushing's syndrome, adrenal carcinoma, ectopic ACTH syndrome, and adrenal nodular hyperplasia.
With patients receiving more than 5mg per day of biotin, a sample should be taken no sooner than eight hours after previous dose.