A serological test that uses red blood cells coated with exogenous antigens such as bacterial polysaccharides as a method to detect patient antibodies against that exogenous antigen is called:

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The serological test that uses red blood cells coated with exogenous antigens such as bacterial polysaccharides as a method to detect patient antibodies against that exogenous antigen is called hemagglutination. During the test, if the patient's serum contains antibodies against the exogenous antigen present on the red blood cells, it will cause agglutination or clumping of the cells. This test is commonly used for the diagnosis of bacterial infections, including Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis.

A Serological Test That Uses Red Blood Cells Coated with Exogenous