Hey there...actually, there are new TSH guidelines. The new range is .40-2.0

Go to this website http://www.nacb.org/lmpg/thyroid/3c_thyroid.pdf

and go to the section on thyroid...then tsh...then scroll down to 22a

Most doctors don't keep that up to date so it's a good idea to "arm" yourself with the information before approaching your doctor. It's very possible to be a symptomless hypo...but the truth is..once you get on a good regimen of treatment, you'll realize you weren't that great to begin with!! Good luck!