Guest guest Posted April 24, 2010 Report Share Posted April 24, 2010 Hi guys, In a much older post here, someone copied and pasted some research (but didn't cite where it came from) that said when labs do your Free T3 test, they do not distinguish between RT3 and FT3, so your FT3 test could be a mix of both RT3 and FT3. If this is correct, then the whole ratio thing would not be accurate, right? Because it is not really comparing FT3 levels to the RT3 levels. Does anyone know if this is true or not? Thanks, Kate Quote Link to comment Share on other sites More sharing options...
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