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Very interesting question, I was wondering the same thing.  This time
when I went for my yearly check-up, I asked the nurse to do a
hematocrit(to test for anemia) so she did and the doc had me come back
for folic acid, iron levels, said I may be slightly anemic.  I asked for
the complete blood test for vitamin, mineral absorption and he said if
you take vitamins you dont need that. Well, I dont take vitamins, I cant
find one that GF. Have you found a doc that interested in celiac?? Janet