The property of a test to detect only a certain antibody or antigen and not to react with any others is

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Specificity refers to the ability of a test to only react with the specific antibody or antigen it is designed to detect, and not with any others. Cross-reaction occurs when a test reacts with similar but not identical antigen or antibody, while agglutination and precipitation are specific types of reactions that can occur in tests, but do not necessarily indicate specificity. Sensitivity refers to the ability of a test to detect even small amounts of a specific antigen or antibody.

The Property of a Test to Detect Only a Certain