The normal range for TSH is between 0.4 and 4.0 mIU/L. However, if my TSH is 4, I’d barely be able to move. I do better with it as close to 0.4 as I can manage. You could have a “normal” TSH and still have symptoms.

Also, did they check for thyroid antibodies? After my wife and I were both diagnosed with Hashimoto’s Thyroiditis, we started pushing to get our three kids tested. They were young, and had “no symptoms”, so the pediatrician didn’t want to test them.

My wife chose to be a pain in the ass and harass their doctor until she gave in and ordered the tests. Imagine her shock when the two older kids had high TSH and our daughter, who was in the normal range, had positive thyroid antibodies (showing that she also had Hashimoto’s even though her TSH was normal).

Also it turned out they all did have symptoms. They all experienced personality changes when their thyroid levels were off. The oldest would get mopey, middle kid would get weepy, and the youngest would get angry. It was wild.