Thanks for this advice! I have been thinking about asking him to do the free for comparison because I know that everyone is different. My T3 is only at half of range, so if the free is any lower, I want to know that. I plan to ask about doing a free at my next check up.
Pretty good explanation of free T3.
BTW, my endo gave me my follow blood orders and it does specify free T3 and free T4
Given the hypothyroid and autoimmune issues at work, it'd be interesting to see 25(OH)D levels via LabCorp or ZRT (Quest's 25(OH)D test isn't reliable).
Last edited by cillakat; 10-11-2010 at 12:30 PM.