Hello, I'm sorry you're going through all this, but as my colleague mentioned, to diagnose Cushing's disease, they test for ACTH, morning cortisol, urinary cortisol, and salivary cortisol. They also do a dexamethasone test, but only if the levels are high. If you had a pituitary tumor, I imagine you've already experienced this, right? Or did you not develop Cushing's because of the adenoma? I wish you the best of luck, and don't delay. Keep talking to your doctor. This disease isn't very common, so doctors don't usually consider it unless the symptoms or physical changes are obvious. Good luck.