Than you! I have an elevated B12 1172 ng/L, and Serum Folate 16.7 ug/L. It was first noted 6 months ago.
At the time I was taking B12 1000 mcg, on alternate days. I stopped taking it, but my latest blood test six months on is still high. My question, what causes it to remain high? does it get back to a normal, or is it an indication of some other problem. Milia