Standard ACTH test,”Test for primary adrenal insufficiency IV infusion of ACTH and measure plasma cortisolIn primary – cortisol does not increase sufficiently In secondary – cortisol fails to respond to ACTH but if the test is repeated for 4-5 days

Standard ACTH test,”Test for primary adrenal insufficiency IV infusion of ACTH and measure plasma cortisolIn primary – cortisol does not increase sufficiently In secondary – cortisol fails to respond to ACTH but if the test is repeated for 4-5 days

the adrenal eventually respond”