I'm a newbie here, so I can't be of tons of help. But from what I've read, thats a pretty low FT4. The range on my lab results actually goes from 0.8-2.2. The TSH is higher, but still within "normal range". However, I've read that a TSH above 2 will make you feel sluggish, and people usually feel best within the 1 range. Some new studies as of 2003 have suggested the TSH range actually be moved to 0.3-3.0. So some doctors disagree on what the optimal range is....my lab results have the same range though.