The hematological status and serum ferritin were examined in 382 pregnant women between 16 and 20 pregnancy
weeks and hemoglobin concentration before delivery. All
women were presented with singleton pregnancies. Exclusion
criteria included chronic renal disease and malignancies and
having a blood transfusion at least 3 months before enrolment
in the study. Women with hemoglobin (Hb) between 10.0 and
11.0 g/dL received oral iron supplementation. Women with
hemoglobin