May I ask.... were you taking vitamins when this blood work was taken?

It is best to stop all vitamins for several days before testing to
see what the more realistic values are.

The ranges labs report were done on volunteers who were NOT taking any supplements.

If you did not stop your vitamins, I'd say the B12 is rather low.
It is adequate but not sterling, if you were not using any supplements at the time of the test.

The first choice, for other supplements would be R-lipoic acid stabilized. This may help your A1C come down a bit.
100mg of the new stabilized form is all you need once a day.
this is an example of a good one many of us use here:
http://www.amazon.com/Doctors-Best-S...+r-lipoic+acid
This form allows better absorption and lower doses than the old
ALA.

Start with this one, and see how you do in a couple of months, before adding in another item.
Make sure you are taking a good multi like Centrum Silver for the biotin and Vit A, which may help with your blepharitis.

So you take something for the colitis? Some drugs used for that deplete folate.