Contemplate this, Abby or anyone else. How much does a person's metabolism come into play? If you have a higher metabolism, like guys do, does it circulate antibodies more? And how does edema, which floods fluids into spaces not available for blood testing, or other medical issues impact the test?

And you're right, saying that 15% of MGers test negative for antibodies (ACh or MuSK) is not an obvious and accurate statement. You know that MGers are not all getting diagnosed because of the seroneg category and lack of info by regular neuros. I really hate statistics, like Bell curves. They often don't do anyone any good.