Having upped my Thyroxine my blood tests came back with a T4 of 29 (Range 12.5-20.5). As I have mentioned previously my endo wants to now reduce my Thyroxine again due to the "dangerous" level. I feel much much better. What I want to know is how "dangerous" is a T4 level of 29? I have NO symptoms whatsoever of being hyper. (How can I be I am a HYPOthroid patient.) Endp speaks of bone problems and stroke but my pulse rate is 75-80. Blood pressure is fine.