Am interested to know what lowers TSH, is it T4 or T3?
Latest results on 75mcg of Levo up from 50 show a drop in TSH, increased free T4 a bit but my free T3 no change.
Thanks
Neal
Am interested to know what lowers TSH, is it T4 or T3?
Latest results on 75mcg of Levo up from 50 show a drop in TSH, increased free T4 a bit but my free T3 no change.
Thanks
Neal
Both T4 and T3 can affect TSH.
Most people report that taking T3 lowers their TSH more, but I find that it's T4. If I take NDT, my free T4 roses fast, my TSH drops below range and my free T3 stays the same. If I take T3 only, my TSH goes up a bit (to bottom of range) and free T4 falls and free T3 stays much the same. Why? I don't know.
Looks like a bit of both then. Thanks for your replies.
Being left on 75mcg, so next up might be trying NDT.