Good question: You need to monitor your blood level of iron and ferritin. Also you may need to check a few other things such as serum folate (folic acid) and b12. The size and hemaglobin concentration on the basic CBC blood test is a start. If you have a low rbc count and your rbc size is small (low mcv) you may have iron deficiency. If the red cells are larger than normal think low folate (folic acid) or low b12.
Answered 6/10/2014
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