Thank you all for the replies. I will ask the hematologist about some of these things. Hemoglobin was normal on this test, probably because I am supplementing iron. I'm sure they tested for folate, and I am supplementing B12, zinc, copper in my battery of supplements. Overhydration is possible. MrsD, the low iron did start in my 30's, I'm 41 now. I don't use any acid blocking drugs, just a very occassional generic Tums. My Dr has not mentioned possible poor acid content of the stomach. I had an upper-endoscopy and colonoscopy to look for bleeding.
Electron