The good news is this: my MMA blood results came back as high, confirming B12 deficiency - despite B12 blood test, taken at the same time, reading over 2000. My Dr. has had me on 2nd lot of loading injections (6 over 2 weeks) while waiting for results, which will now be continued until no further improvements then 1 EVERY MONTH! She also noticed visible improvement, does not need to see me again and will let me decide when to stop loading and start monthly injections- as you can imagine, this delighted me and my partner, ....and my doctor! Improvements did not even start until after the 5th injection (of 6) so don't get disheartened. Also, things are looking up with dental work: bone infection after removal of tooth has finally cleared up and stitches removed! I think this is also due to B12 loading as it disappeared suddenly. Don't give up, people !