Hi, I have been on 50mcg Levo and 20mcg since February when it was upped by my Endo, I started on combo last November 75 Levo 10mcg T3 but I have never had a blood test for T3 only TSH and T4 I'm not due to see Endo till May 10th I feel a lot more alert than I did but I seem to be getting odd highs more anxiety and feel hot then I go to feeling weary again could this be antibody attacks causing this? I was diagnosed in November 2015 high antibodies which my Endo has never mentioned he never tested me it was done by another hospital. This Endo doesn't want my GP doing any bloods in between seeing him. So I've gone 5 months taking T3 and no blood tests. I feel much better with the brain fog and I'm up and about more but I'm now having these odd times of anxious and hot flare ups then feeling so weary. Not the menopause that's well gone! The endo only upped my T3 in Feb this year as I was having afternoon slumps I'm just bit concerned I haven't had a blood test for T3 since taking it.can anyway advise Please!