Testing anti-B against B cells in daily QC verifies which property of the antibody?

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Multiple Choice

Testing anti-B against B cells in daily QC verifies which property of the antibody?

Explanation:
Testing anti-B against B cells in daily QC checks that the antibody binds to its intended target, the B antigen. Observing a positive reaction with B-expressing cells confirms the reagent recognizes and attaches to the B antigen, demonstrating antibody specificity. This step ensures the antibody will react correctly with B-positive patient cells. It doesn’t primarily assess stability or shelf life, which relate to how long the reagent remains usable, nor does it directly reveal cross-reactivity, which would appear if the antibody reacted with non-B antigens or other cell types.

Testing anti-B against B cells in daily QC checks that the antibody binds to its intended target, the B antigen. Observing a positive reaction with B-expressing cells confirms the reagent recognizes and attaches to the B antigen, demonstrating antibody specificity. This step ensures the antibody will react correctly with B-positive patient cells. It doesn’t primarily assess stability or shelf life, which relate to how long the reagent remains usable, nor does it directly reveal cross-reactivity, which would appear if the antibody reacted with non-B antigens or other cell types.

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