Hi there, I just recently learned that with my FT3 a little over range, FT4 on the low side of range, it could lead into, T3 toxicosi, is this true? because I had a repeat test of TSH and FT4 test again in July, but not the FT3 level. Also, what blood test should I have to rule out T3 toxicosi? Thank you for reviewing my post.