I had both a Single Fiber EMG(a needle is inserted into the muscle) and an RNS (Repetitive Nerve Stimulation) test 4 weeks ago.

The Single Fiber EMG was not as bad as I had anticipated. It was not painful, but it was *very* uncomfortable. To sum it up, it is absolutely NOT pleasant.

The RNS had no needles, just magnet like thingy's, and it was also very unpleasant but not "painful."

Hope that helps! :-D

I also wanted to add that the woman who did my Single Fiber EMG and my RNS-Repetitive Nerve Stimulation test, did a terribel job. I am not satidfied with her results and am planning to repeat the test at another hospital with someone who has more experience diagnosing Myasthenia Gravis.

1.) The Room was freezing, my hands were ice cold during the test.
2.) She only spent about ten minutes doing the Single Fiber EMG, and only tested my left arm and my left thigh. My biggest problem is the right side of my face, terrible ptosis and a severly crossed right eye. You would think that would have been an obvious place to test.

From what I have read most Doctors will spend 45 minutes to an hour doing the Single Fiber EMG.