Confusing Test Results

I was diagnosed with Hashimoto's in 1992. I am on 120mg Armour. I just recently had a blood test and my doctor said that my results are in the normal range. My TSH is 0.023 and my Free T4 is 1.2  I thought that if I had a TSH below 0.4 that meant that I was over medicated. My doctor said she goes by the  Free T4 result and not the TSH. Can you help clear this up for me? I have never had my test results come back like this before.

[AR-10]

When you are taking Armour, your TSH will be suppressed because your Free T3 will be higher than if you were on a T4 med.

So dosing by using a Free T4 test AND a Free T3 test is more reliable.

With your TSH that low, your doctor should have run a Free T3 test to see how it looks. 0.023 is pretty low.