I had all the tests...NCV, EMG, SFEMG, (all nerve tests) AChR and MUSK antibodies, VCC, complete thryroid panel, etc. (bloodwork). Then there was a CT scan (abdomen and thoracic cavity), MRI of brain and upper spinal column, and an EEG (the last one I never understood), and a pulmonary function test.

I have to say I was getting really worried there for a while! All that and everything came back fine except for EMG/SFEMG that were abnormal but not in the 'fail' range.

So my neuro tried an in office dose of Mestinon...to which I responded beautifully...and voila!! You have MG.