I was diagnosed with Graves in September 2014 at 20, with no apparent family history of any thyroid disorders . My T4 level at that point was 55. I was on Carbimazole until April this year, with my T4 Levels staying around 12-15 whilst on carbimazole. I had my bloods done last week and my TSH has gone down to 0.01 and T4 up to 22. Does this sound like the Graves has returned ? Im under a consultant and she said on my visit in april I would have to discuss difinitive treatments if it returned.