I like this list, especially since it includes CFS & fibro. It isn't down to an exact science and they missed a few things (like for instance, CFS patients can have an elevated fever), but it may help if you don't have a diagnosis and/or have overlapping conditions. I think it would be wise to print out the list... check your symptoms and then share it with your physician.
http://thyroid.about.com/cs/endocrinology/l/blchecklist.htm