43 yo f, afternoon cortisol high, cortisol suppression test high, CT of adrenal glands normal. Other causes of elevated cortisol?

Pituitary . Cortisol is under control of the pituitary. You need to know if the source is coming from the pituitary. We call this Cushing disease. See a specialist to work this up. Cushing's is one of the most difficult diagnosis to make, even for a specialist. .