Forgot to mention: if you have results for Free T4 and Free T3, please post them, along with the lab's reference ranges.
A TSH of 0.67 is within the range. Have you had Free T4 and Free T3 done? TSH is a pituitary hormone and is not really indicative of thyroid levels. Without knowing your levels of Free T4 and Free T3, which are the actual thyroid hormones, it's impossible to comment. What, if any, symptoms do you have?