I have been continuing to take 3000 methly B12 everyday or everyother day or so. I also take lots of other vitamins and supplements. My lowest level was 209 in June. Now my level has gone up to 1040. Maybe I just have a problem with converting b12 from food. Anyway my question is this: My level at 1040 is that what is actually in my body or just floating around in my blood? Is there a test to see what the actual level is or if your body is able to absorb it properly? Iam going to have a MRI of my brain and neck on Tuesday. If thet come out inconclusive for MS the neurologist wants to test the fluid in my spine for MS and Lyme. If those are clear should I push to see if this is all related to B12? My family seems to have some kind of problem absorbing from food. I already had HCY, MMA and intrinsic factor all are negative. ANA and celiac panel came back negative. I do not know if the leasion are old or new. I will have to ask if they can tell just be looking at the MRI.