This test measures the level of Adrenocorticotropic Hormone (ACTH) in the blood. ACTH is a hormone produced by the pituitary gland which stimulates the production of cortisol. Cortisol is produced by the adrenal glands. Conditions which affect the pituitary or adrenal glands can cause the balance between ACTH and cortisol production to be thrown off.
This test is usually ordered to monitor or aid in the diagnosis of conditions which are associated with excessive or deficient cortisol levels. These can include Cushing syndrome, Addison disease, hypopituitarism and ACTH-producing pituitary tumors. ACTH testing is often ordered with a Cortisol Blood test.
Turnaround time for this test is typically 1 business day.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Collection for the Adrenocorticotropic Hormone (ACTH), Plasma test should be done between 7 am and 10 am when ACTH levels are highest.
Certain medications may affect the accuracy of this test. It is advisable to consult your prescribing physician prior to having your blood drawn.
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