Diagnosis of Severe Fetal Anemia Based on Perinatal Outcomes: A Comparative Analysis of the Current Reference Values

Table 3

Criteria for diagnosis and classification of fetal anemia.

	Mild anemia	Moderate; anemia	Severe anemia
Nicolaides et al. [11]	Hemoglobin deficit <2 g/dL	Hemoglobin deficit ≥2 g/dL to 7 g/dL	Hemoglobin deficit >7 g/dL
Bahado-Singh et al. [12]	Hemoglobin deficit ≥2 g/dL to less than 5 g/dL	—	Hemoglobin deficit ≥5 g/dL
Mari et al. [10]	Hemoglobin concentration from 0.84 to 0.65 MoM	Hemoglobin concentration from less than 0.65 to 0.55 MoM	Hemoglobin concentration less than 0.55 MoM