Hi I had my bloods done at the end of jan my tsh was 0.27 . Range is .4 -4.5 , I was on 125mcg of levothyroxine so the doctor changed my meds to 125 one day 100 next , had my bloods done 8 weeks later which was 2 weeks ago and my tsh is 0.16 and t4 19 ?? So now ive been put down to 100 mcg each day , how if my meds have been reduced has my tsh went lower ??