When I was diagnosed there was only one marker in the blood test that came up positive. Then the ice test was positive and my Dr. started me on a low dose of Mestinon with positive results. This is a tricky disease and it seems there are not a lot of knowledgable Dr. Find a good neurologist. I have been through three so keep searching till you find the right one. If your Dr. would let you try the Mestinon and it helps you might have your answer. Good luck.
Al