ACTH stimulation test(redirected from Cort-stim test)
Also found in: Wikipedia.
ACTH stim·u·la·tion test
ACTH stimulation test
Synthetic adrenocorticotropic hormone (ACTH) is injected intravenously, and the serum cortisol level is measured at timed intervals (30 or 60 min after the injection). A patient with normal adrenal function will respond to the test with increased serum cortisol levels above 18 µg/dl. Serum cortisol levels < 15 µg/dl are diagnostic of adrenal insufficiency. The test has been traditionally performed with an injection of 250 µg of ACTH, but studies have shown that 1 µg is an equally effective test dose.