Great point Pat that I forgot to include but meant to. When I tell the dr I want a FULL thyroid panel will they know that means (and I think this is what's its called) T3 and T4?
What you need to tell them is that you want a full panel that is sent out to an approved OFA Lab for thyroid. Here is the OFA link for both you and the Vet (form to be filled out and instructions)
And here are the labs that do the testing: http://www.offa.org/thy_labs.html