[Fractionation of human erythrocytes according to their sedimentation behaviour caused by gravity. II. Application for the differential diagnosis of erythroblastosis caused by incompatibility in the abo blood group system (author's transl)].

In contrast to Rh-erythroblastosis the diagnosis of A/B0-erythroblastosis by means of serological methods is often impossible. Further biochemical investigations, the demonstration of elevated erythrocyte sedimentation rates in polyvinylpyrrolidone and of typical microsphaerocytes in blood smears can support the diagnosis. Using a modified method by Danon et al. the authors demonstrate an additional population of heavy erythrocytes in the blood of patients suffering from A/B0-erythroblastosis, the relative amount of which correlates with the severity of the disease. The fast method seems to permit prognostic predictions in cord blood.