If a large feto-maternal hemorrhage is suspected, quantification of the number of fetal RBCs is performed by a Kleihauer-Betke test. Up to 5 vials of 300 mcg of RhIG can be given in one 24-hour ...

Kleihauer-Betke acid elution tes 1 Fetal hemoglobin resists release (or elution) from its RBC under acid conditions, whereas adult hemoglobin is released. The mother's blood is drawn and a sample ...