Abstract
Serum ferritin has been estimated by ELISA (double antibody sandwich technique) in 225 normal and anaemic subjects as well as pregnant women. It was log-normally distributed with a geometric mean of 58.9 ng/ml in 60 normal males and 31.6 ng/ml in 58 normal females. In 75 nonanaemic pregnant women, it was 21.9 ng/ml in the first trimester, 19.5 ng/ml in the second trimester and 14.4 ng/ml in the third trimester of pregnancy. In 32 nonpregnant anaemic women, it was 9.0 ng/ml. There was no correlation between serum ferritin and serum iron or transferrin saturation. In 46.8% of anaemic women, serum ferritin was elevated in the face of anaemia and low transferrin saturation, limiting the value of serum ferritin as a universal tool for the assessment of iron deficiency, at least in this geographic region where iron deficient states are often complicated by infections.
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