To confirm polyagglutination due to bacterial action, which panel is used?

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Multiple Choice

To confirm polyagglutination due to bacterial action, which panel is used?

Polyagglutination caused by bacterial action happens when bacteria enzymatically modify the red cell surface, exposing cryptantigens such as the T antigen after sialic acid removal. A lectin panel is used because lectins have specific carbohydrate affinities and can detect these exposed surface sugars. For instance, certain lectins will bind to the exposed T antigen when neuraminidase from bacteria has acti-vated the cell surface, producing a characteristic pattern that confirms cryptantigen exposure due to bacterial action. This approach directly tests for the altered carbohydrate structures on red cells, unlike other tests that look for antibodies or compatibility. ABO reverse typing, antibody screens, and crossmatches do not reveal these cryptantigen changes, so they don’t confirm bacterial-induced polyagglutination.

Polyagglutination caused by bacterial action happens when bacteria enzymatically modify the red cell surface, exposing cryptantigens such as the T antigen after sialic acid removal. A lectin panel is used because lectins have specific carbohydrate affinities and can detect these exposed surface sugars. For instance, certain lectins will bind to the exposed T antigen when neuraminidase from bacteria has acti-vated the cell surface, producing a characteristic pattern that confirms cryptantigen exposure due to bacterial action. This approach directly tests for the altered carbohydrate structures on red cells, unlike other tests that look for antibodies or compatibility. ABO reverse typing, antibody screens, and crossmatches do not reveal these cryptantigen changes, so they don’t confirm bacterial-induced polyagglutination.

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