@MLeeB - Hi again - The first thing I read said you had been on Prednisone for 5 months. I am so sorry to hear that you are having so many problems. I had the ACTH blood test when I got down to 5 mg to see if my adrenal gland was working. It was working and they thought I would do fine which I did. If you have been on Prednisone for 3.5 years now, were you on it for another reason or just the Giant Cell Arteritis.