I have had some thyroid problems now, I've been doing some tests in my country. In Sept my free T3 was very low (0.83 (2.0 - 4.9)) so I started taking synthroid. My free T3 and T4 are increasing. T3 is now 1.92 and T4 1.12 (0.75 - 1.54). But my TSH has gone lower. On the previous test it was 2.05, but now it's 0.40 (0.27 - 4.2). It's still in the range, but I'm a little concerned, is it normal to go lower? My doctor here can't tell me anything useful unfortunately.