--you should at least bring up this issue at your new appointment. As Raglet says, the confusion of left and right is very common in medical testing--far too common, unfortunately. It's one of the reasons patients have to be as alert as feasible and constantly ask/repeat, both to themselves and to those in the "theatre", what is being done. (And if the medical professionals in the "theatre" resent it, that's their problem.)

I'm hoping, if UVA is going to do a comprehensive work-up, that they might do their own nerve conduction testing. Annoying for you, certainly, as that testing is often uncomfortable, but it might be worth it--nerve conduction testing is notoriously variable due to factors such as the skill of those doing it, placement of electrodes, even the temperature in the room (it should be cool, rather than warm, for best accuracy--nerve conductivity tends to decrease with temperature even with "normals").