Bordetella pertussis IgG Antibodies – Quantitative is a blood test that measures the level of IgG antibodies against Bordetella pertussis, the bacterium responsible for whooping cough (pertussis). It helps assess evidence of previous infection or vaccination and may support evaluation of suspected recent or past exposure. Quantitative antibody levels can provide additional information when investigating prolonged cough or determining immune response to pertussis.
Bordetella pertussis is a bacterium that causes pertussis, a highly contagious respiratory infection characterized by prolonged coughing and, in some cases, characteristic coughing fits.
A high antibody level may indicate previous exposure or vaccination. Depending on the assay and timing, a significantly elevated level may also support recent infection.
Not necessarily. IgG antibodies can remain detectable after previous infection or vaccination. Interpretation depends on the antibody level, timing, symptoms, vaccination history, and testing method.
Yes. Vaccination can produce antibodies against pertussis and may result in detectable IgG. This is why vaccination history is important when interpreting the result.
It means that the antibody level is below the laboratory's detection or reference threshold. This may indicate no significant detectable antibody response, although interpretation depends on vaccination and infection history.
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