For Blood Typing and Cross-Matching we have a term and definition in Cancer.

Blood Typing And Cross-matching (Cancer)

The blood cells contain factors that are not the same in all people. Before a transfusion can be given, blood samples from the donor and recipient are typed, or classified (type A, B, AB, or O). Once the two blood samples have been typed, they are cross-matched to be absolutely sure that they are compatible. This is done by placing red cells of the donor in a sample of the recipient's serum and red cells of the recipient in a sample of the donor's serum. If the blood does not "clump,' or agglutinate, the two bloods are compatible. Techniques for typing white blood cells and platelets are similar but more complex. (See HL-A.)

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