Last year I was diagnosed with PA. I have been taking oral B12 (no injections, Doctor refuses despite PA diagnosis). Even though I take B12 supplements, I still have symptoms and feel rather terrible. My B12 level is 630 and folate 18.9. My MMA is 99 (ref range 0-378) and homocysteine 6.3 (ref range 0.0-15.0). Are my MMA and homocysteine results normal because my B12 is normal? Should I have been off supplementation for a while before doing these tests? I feel since these were normal that my hematologist won't repeat them in the future. Parietal cell level 86.4 (ref range 0-20) gastrin 2680 (ref range 0-115). IF 1.1 (ref range 0.0-1.1). Everything on CBC is normal for now. Despite normal b12 levels can I still have PA symptoms? Any insight on what I should do pertaining to MMA and homocysteine?