Let's say two NDT tablets raise t3 to the same degree. Is it possible that one brand would put TSH to value 2,5 and another brand would lower TSH to 0,02 when keeping/raising t3 to the same value?
When I was on Erfa my TSH levels was 0.72 and T3 was 4.79. On thyroid-s my TSH was 0.01 and T3 was 4.53 (ref. range 2.6-5.7). I am trying to find out why. My guess is that with tyhroid-s I was getting more T3. But because I did lab test 12 hours after last intake the results wasn't reliable because of T3 release time. If I did lab test 4 hours after it would probably show t3 number above 6 which is enough to suppress TSH so much.
So what I am wondering is if erfa released more stable t3 and tyhroid-s more promt t3 or the reason is just about different t3 levels absorbed.