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Optimal FREE T3 range science

Discussion in 'Thyroid Dysfunction' started by xebex, May 9, 2017.

  1. xebex


    Hi All,

    I have read that the optimal FT3 range should be in the top 25th percental of the "normal range".

    I've just had my FT3 tested, it comes up as 4.5 pmol/l with the lab range of 3.5 - 6.5. Doc, of course, says it's normal, but it is not in the top 25th percentile. So I'm concerned that it's too low, (it works out as about 2.9 pg/mL)

    Can anyone point me to some scientific articles of why my FT3 needs to be in the top 25th percentile that I can show my doc? I'm pretty sure he'll ignore all the articles I've found so far.

    Hyperflux and ChrisD like this.

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