I think your B12 levels were up because you were taking
the supplements when the tests were done.

I don't know off hand what the ranges for MMA are. They should be printed on your test. A good result to have is a LOW number.

I did look around and found this article which states, that MMA done with a urine test is more accurate. Now this would be important for people with the genetic disease that raises MMA (this is rare--mostly done with children).

http://www.b12.com/uMMA.htm

Since your initial test was very low, and since you have the antibodies, you know you will need B12 for life now. That is all that really matters.