Daniella,

You would have absorbed plenty from your regular B complex if you malabsorb only from food. It is entirely reasonable under those circumstances that you would have tested 2000 without stopping for days prior to test samples being drawn.

If you then stopped (as I believe you said you did) for days prior to the other tests, the 1500 results are providing a clue as to how your B12 stores were at the time. The 2000 also measured what was running around in your blood and would never be absorbed or used.

rose