A–Z Glossary

Ferritin test

A ferritin test measures a key marker of stored iron, although inflammation or infection can raise ferritin levels.

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Anemia and iron deficiency in pregnancy

Anemia and iron deficiency in pregnancy

What anemia and iron deficiency mean Anemia is a reduction in the oxygen-carrying capacity of blood, most often assessed by hemoglobin concentration. In pregnancy, hemoglobin thresholds differ from nonpregnant ranges because plasma volume expands more than red cell mass, producing physiologic hemodilution. This can make interpretation more nuanced: a mildly lower hemoglobin may be expected, […]