A 22-year-old woman is pregnant and at 14-week gestation. Her hemoglobin level is 9 g/dL. She asks why she could have iron deficiency when she is no longer menstruating. Which of the following is the best explanation?
( B ). Iron deficiency occurs in pregnancy as a result of the expanded blood volume and active transport of iron to the fetus.
- A.Occult gastrointestinal blood loss
- B.Expanded blood volume and transport to the fetus
- C.Hemolysis
- D.Iron losses as a result of relative alkalosis of pregnancy
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