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Cross matching

Authoring team

The patient's ABO type and rhesus status must be known. A sample of the potential donor red cells is then incubated with a sample of patient serum in a test tube and checked for agglutination.

Grouping, antibody screening, and cross-matching take about an hour and a half which is usually rapid enough to avoid the use of universal donor blood - Group O negative.

Reference:

  1. NHS Blood and Transplant Service. Blood Essentials - new transfusion education and reference tool, April 2024 (online)

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