Rach, I am sero negative with dubious results on the single fiber (slightly below the minimal reading). Any way, neuro said something like, ' I hate it when the tests don't show they should...clinically you have MG. It's mild, but that's what you've got. '

Now this was my second neuro (the first one was more like what you are descibing) . It must have a lot to do with their experience level as to whether or not they feel comfortable stepping out with a diagnosis without pristine lab backups.

Keep trying to find the right doctor - - it's not easy, but it will be worth all the ups and downs once it happens.