Raider,
The ultimate authority for the thyroid is STTM.
http://tinyurl.com/STTM-Links

Also read this:
https://sites.google.com/site/violienshealth/thyroid

Your thyroid has big problems if your body temp is below normal. That is all you need to know. You take Iodine (or Natural Dessicated Thyroid Hormone until your body temp is normal. You can drive yourself crazy worrying about blood test numbers. The numbers and your thyroid will take care of itself when supplied with Iodine and selenium.

To look at this in a different light, the testing numbers get screwed up because of the toxins of fluoride, bromide & chlorine. So don't look at the numbers and focus on body temp instead.

Grizz

When you say "range" what are you referring to? Lab test numbers? If so, then you have to take any "range" with a grain of salt because "ranges" are based on a population and you are an individual.

What matters to you is your levels or more accurately your historic levels. Comparing yourself to others does little good.