finding the FT3/rT3 ratio

[Jan49]

I have used the STTM method of calculating the ratio and come up with a silly number.

FT3 is 9.55 pmol/L and rT3 is 0.86 pmol/L.

My ratio comes up as 1110.5. I know over 20 is good but really!

[helvella Administrator Thyroid UK]

The calculator on STTM is broken and does NOT work with typical UK test results. I think, but am not sure, if it comes up with 1110.5 that should be read as 11.005.

Rod

[Jan49 in reply to helvella]

Thanks Rod, there are various formulae out there, and all of them seem to give a ridiculous answer.