Dx w/Hashi's approx 8 yrs ago. Tsh hovers around 1and below on 1 grain armour and .5 levoxyl. Three am cortisol (8:00 am) over the past year 8,6, and 5. Started 5 mg. Prednisone 4 months ago and cannot get below 4.75 without severe muscle fatigue, weakness, and a general sick all over feeling. This resolves when I up my dose to 5. Can I test my adrenal function on Prednisone? Who would do the test? Local endo is unwilling and is certain I do not have an adrenal problem. Your thoughts? Should I seek another opinion?