Yes, if he asked you to clench, that was a SFEMG.

We have a few people on this board who are diagnosed with MG even though their SFEMG's came back normal.

I had three SFEMG's. The first was borderline, and the second was mildly abnormal, but not (according to the neuro) enough to diagnose me. Then the neuro sent me to another neuro (I had to travel a bit) who is a special expert at diagnosing MG. He did a SFEMG and diagnosed me with MG on the basis of it.

It's so hard not to know what's going on. I hope you get some clear answers soon.

Abby