for a Full Metabolic Blood Panel! Be sure to ask for a copy before the blood is drawn SO they KNOW YOU WANT IT! Just look for the #'s results and then the ranges... Some will have '*'s and these say if the #'s are flagged as too high or too low. A lot of those #'s too low you can help along w/supplements? But do please keep in mind that improvements don't happen overnight. It often takes months + to show better numbers. Especially if you have other issues 'percolating'. I say this last part, because that is what happened to me, tho it's uncommon? It is not something to be dismissed litely.
Do read Mrs. D's info on B-12! It mite seem overwhelming at first? But if you take it in smaller bits at a time - it will eventually sink in. AND, will be very useful in the long run.
It sounds as if your neuro isn't asleep behind the wheel. He's testing and looking at [or trying to?] your whole picture. Keep at it tho, if the med causes bad side effects or if things seem to get worse. Do NOT be put off!
Keep good heart and have hope! - j