Table 1. Contrasting definitions of... | American Society of Hematology

Table 1.

Contrasting definitions of anemia and iron deficiency during pregnancy

	World Health Organization^2,11	American College of Obstetricians & Gynecologists³
Ferritin	<15 ng/L ^*	<30 ng/L ^**
Hemoglobin
First trimester	<11 g/dL	<11 g/dL
Second trimester	<11 g/dL	<10.5 g/dL
Third trimester	<11 g/dL	<11 g/dL

	World Health Organization^2,11	American College of Obstetricians & Gynecologists³
Ferritin	<15 ng/L ^*	<30 ng/L ^**
Hemoglobin
First trimester	<11 g/dL	<11 g/dL
Second trimester	<11 g/dL	<10.5 g/dL
Third trimester	<11 g/dL	<11 g/dL

WHO definition for iron deficiency during first trimester of pregnancy;

ACOG definition for iron deficiency during any trimester of pregnancy.