I'm on T3 ONLY. After 6 weeks of being on T3, currently on 30mcg (split into 2 doses);
TSH 0.22 (0.35-5.5). It was 2.14 on Levothyroxine, but stopped and went onto T3 only.
FT4 7.7 (11-23). It was 16.9 on Levothyroxine.
I can't believe the lab hasn't done my FT3 when I'm on T3 only! Is this right? I know they don't do it normally, but I thought they would this time as I'm on T3. My consultant requested it and the lab hasn't done it!
Is it normal for FT4 to be low when on T3? I read that TSH can be suppressed on T3, but I don't know much about the effect T3 has on FT4?