If a patient requiring a blood transfusion has an anti-e antibody, then approximately what percent of donor blood tested would be compatible?

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Multiple Choice

If a patient requiring a blood transfusion has an anti-e antibody, then approximately what percent of donor blood tested would be compatible?

Explanation:
Anti-e is an alloantibody that targets the e antigen of the Rh blood group system. For a transfusion to be compatible, donor red cells must lack the e antigen so the antibody has nothing to bind to. The e antigen is very common in the population, so the fraction of donors who are e-negative is small—about 2%. Therefore, only roughly 2% of donor units would be compatible with a patient who has anti-e.

Anti-e is an alloantibody that targets the e antigen of the Rh blood group system. For a transfusion to be compatible, donor red cells must lack the e antigen so the antibody has nothing to bind to. The e antigen is very common in the population, so the fraction of donors who are e-negative is small—about 2%. Therefore, only roughly 2% of donor units would be compatible with a patient who has anti-e.

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