Hi, Kathie
Good luck with everything. I was also tested seronegative too. I just had a Nerve conduction, EMG, & SFEMG tests done Monday and have a follow-up on Wednesday. Then they called Tuesday and want me to come in earlier for my appointment so maybe I'll have a diagnosis then. It's pretty bad when I'm hoping to have a Disease just so I can move on and not be stuck not knowing. My symptoms are getting worse so maybe it showed up in the tests.
Good luck with everything
Bob