This is such an important topic I am going to post about it again. There are many folks like me whose lab work shows low TSH levels. Doctors who treat only according to TSH will say that means we are fine and normal, but this may not be the case. Certainly for me it was not.
According to Barry Durrant Peatfield a normal or low TSH may still occur with a low thyroid. As a result of the TSH test (which is relatively new in the last 40 years), thousands are denied treatment.
If you have low TSH but all the Hypothyroid Symptoms, find a good doctor who looks beyond TSH. According to many experts and patients, the more accurate way to assess hypothyroid is through symptoms and the Free T3 lab test. So call the doctor’s office and ask them if they treat by these standards and you will save yourself time, money, and frustration.