i am gettin an emg on the 10th

should i ask to get one in my pec minor muscle? or would that come back negative? or is that the same as testing the axilla area?

have emgs EVER been useful for tos? tia.

im wondering which side theyll test. my neck is really irritated on the left side. but the right side everything else has worse sx, ESPECIALLy the arm