I never had my thyroid levels tested before doctors suspected a problem, so I have no idea what my FTs looked like before I turned hypothyroid. I was wondering if anyone had labs before developing a thyroid problem, and could tell me what they looked like?
It is often said that, on meds containing T3, your FT3 levels should be at the top of the range, and your FT4 levels midrange. However, when your thyroid works just fine, your FT3 levels are not higher than your FT4 levels, are they? Or is the idea that we should take into account inadequate conversion of T4 to T3?