Thanks -mrsD - I wasn't sure what my B12 "number" meant. ...Glad to know it's not low.

olsen:
I had some kind of serum levels checked -but I don't know what they were. I'm not that skilled in medical jargon. I figure, or more so assume that the serum levels checked were in regards to PN since it was the main issue.

What serum do you mean, do you mean checked for lead poisoning?