As for the blood panel, you will find a lot of people here have NEVER tested positive. My first panel was negative but 6 months later was positive. I think the lack of ability to smile is a classic symptom. That was one of the test my neuro-muscular doctor always gave me. My sister has a horrible droopy face at the end of the day. (won't go to doctor) I don't recall hearing about the numbness in finger tips or the tongue thing but the rest seem to be classic symptoms.
Mike