Cross-matching blood is important before a transfusion is given because there are other blood antigens that could cause agglutination.

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When someone receives a blood transfusion, it is important to cross-match their blood type with the donor's blood type to ensure compatibility. However, there are other blood antigens, such as the Rh factor, that can also cause agglutination (clumping of blood cells) if they are mismatched. Cross-matching helps to identify and prevent these potential reactions.

Cross-Matching Blood Is Important Before a Transfusion Is Given Because