I had my annual endo. Appt. in Feb. and I told him coffee was making me tired. He checked my cortisol level. It was 4.4 at 2pm. He says they are low and wants to do a 0,30,60 stimulation test to see what's going on. The problem is I have to go off Advair for a week before the test, but I can't do it. I have moderate asthma, but constant. Since my appt. my symptoms have gotten worse. Dizziness, muscle weakness and pain, and fatigue. I don't know if there are any other tests they can do while I'm on Advair. I would like to figure out what's going on and feel better. He also thinks the Advair or the predisone I've taken in the past that caused the cortisol to drop. I'm at a loss.