Hello tkw, nice to meet you. I presume you suspect that MS may be the culprit,
in your case? Muscle weakness can be a symptom of MS, as well as many other
causes. It sometimes can take many tests and months for a MS DX. There is
no "one" definitive test for MS, so the tests are usually to eliminate other
diseases as the cause.

Much luck in your DX journey. Keep a symptom journal, to help your Neuro
in his search, as well. We are here for you.