My TSH is very low, .008,but my FT4 is low normal and FT3 is high normal. I feel pretty good at this level. My doctor said it was ok that the TSH was low as long as my Frees were in the range. I lost all the weight I gained while hypo and I feel pretty darn good. I don't go to an endo, I go to my gyn and he seems pretty knowledgeable. I now have to fight for my son whose TSH was 3.68 in June and doctor has kept him on same dose of synthroid. He never tests the Free T's. Also my son started on the generic synthroid a few weeks ago. He has been complaining of being tired and brain fog. I am going to gear up for a fight.