I just located probably the most informative article I have found to date regarding diagnosis. I can understand a whole lot of it, but if I hadn't been looking into it for about a year, I wouldn't.
It would be great to refer uninformed doctors to.
From: Archives of Internal Medicine, June 18, 1999 v159 il2 p1289
Title: Laboratory Diagnosis of Vitamin [B.sub.12] and Folate Deficiency
by Christopher F. Snow
Copyright American Medical Association