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Also known as: Corticotropin; Cosyntropin
Formal name: Adrenocorticotropic Hormone
Related tests: Cortisol, Cortrosyn (ACTH) Stimulation Test, Dexamethasone Suppression Test, Androstenedione

At a Glance

Why Get Tested?

To help diagnose adrenal and pituitary diseases such as Cushing syndrome, Cushing disease, Addison disease, adrenal tumors, and pituitary tumors

When to Get Tested?

When you have symptoms associated with excess or deficient cortisol production; when your doctor suspects that you have a hormone imbalance that could be caused by a problem with your pituitary or adrenal glands

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?

Your doctor may request that you fast overnight before testing. Blood is typically drawn in the morning, about 8 a.m.