again, though - the weight gain is an unusual symptom with somebody with anemia-like blood test results.  it seems to rule out a spleen problem. and, it's just weird in general.

my doctor has already expressed a lot of confusion at the results. for example, i have large rbcs. but, i have low iron and sufficient b12. large rbcs are usually caused by low b12, and low iron usually causes small rbcs. 

none of the obvious things really seem to add up.

whatever it is, in the end, is going to be obscure - that much, i'm sure of.