If you go there testing negative for mg, you are very likely to be referred to a psychiatrist and labeled with a conversion disorder. This is what happened to me. Of course, I was in the hospital there and haven't been to the clinic.
I had a horrendous experience there in their hospital and they actually put my life and my vision at risk by withholding my mestinon. When I was clearly unable to swallow, they removed my nasal tube and pretty much abandoned me to my own devices because they had concluded I was imagining my symptoms.

The reason why I tested negative for mg, was because I have LEMS instead, which to my knowledge, they never even bothered to test me for since they already had their diagnosis wrapped up.