1. My serum B12 was >2,000, and that was not with any supplements. Rich told me this was because the B12 is not getting into the cells...... but , why not? What is it that stops it getting in, and does this have anything to do with Methylation? 2. My Red Blood cell folate was low, and Rich said that this was because the cell membrane was too permeable/leaky..... so maybe it gets in and then leaks out ? Does this apply to B12 too ? Would fixing the leaky cells help B12 to get in? 3. I have MCV of 107, low rbc and low Platelets...... and I have had this for years and the various doctors, including 3 hematologists discount this because my B12 and Folate are "normal", serum MMA was normal and Homocysteine was below normal initially and is now low normal. I know I have C677T +/+, so I know I have a Folate problem, but I also have Chronic Chlamydia Pneumonia infection, and CPn causes antibodies to B12. What other tests can I do to investigate the B12, given that my MMA and Homocysteine are OK ?