So, how did they diagnose your Grave's? Did they test TSI or TRAB? If your TPO and Tg antibodies are high, you do have Hashi's. Unfortunately, a lot of doctors - including endos - don't seem to know the difference. And he probably laughed at you because he didn't have an answer to your question! He was probably thinking, 'oh god! Have I made that same mistake AGAIN???' It wouldn't in the least surprise me!
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