Thank you to everyone for the responses, I appreciate it!
I know my vet will do the bloodwork, but I don't know if I want to wait until she comes back from vacation. I'm going to call some other vets here in town to see if they can do the bloodwork and either give me the results or send them to my vet's office.
Merleniau, thanks for the insight about the neurological vet. I'll check and see if any are in my area.