Lab value range for Free T3?

[foreverlostmom]

What is the lab value range for your Free T3?  Thanks

[Galsal59]

Oops...that's actually FT4.  Sorry.  FT3 was similar to those posted by others.  

[LazyMoose]

"ft3 lab range on my tests is 0.89 - 1.76"

- that is FREE T3,  not T3 or total T3 ?  Huh.........

[Galsal59]

hmm...ft3 lab range on my tests is 0.89 - 1.76   a perfect example of how things run differently

[foreverlostmom]

hmm reading through older posts alot had values of 550 so has this changed?  I have 3 different labs I have had work from and they are all 4.2

[LazyMoose]

I have used two labs, and the difference is in decimal placement.

230 - 420

and

2.30 - 4.20

but they one uses the newer TSH , the other uses the old TSH.

[foreverlostmom]

http://www.endocrineweb.com/TFT.html  

my lab says high end is 4.2 how to I change this to the correct value?  Is it 4.2x100=420??