Please suggest me for that. My Free T4 levels are fine, it has gone from 3.9 to 3.09 to 1.77 to 1.2 over the last 5 months, but the TSH levels varied only from 0.005 to 0.05, but then decreased again to 0.008, 0.270 is the minimum required, TSH. Is surgery the right option for Free T4 is fine? Tsh, as in thyroid stimulating hormone, it commands the thyroid glands to produce the right amount of thyroxine, but a nodule is blocking its message, but using the medications over 5 months, the free T4 levels have been stabilized, even without the signal from TSH, but I can't do this all my life right, so is surgery the only option?