Too high and too low cortisol levels may cause ... secrete adrenocorticotropic hormone (ACTH), which signals the adrenal glands to make more cortisol. Normal cortisol levels will range from ...

Unsurprisingly, my cortisol blood test results came back as "high" at 33.2 mcg/dL. Quest reports that a normal range between ... tumor that makes too much ACTH [adrenocorticotropic hormone ...