Bordetella pertussis Antibody, IgM by ELISA
0.9 U/mL or less: Negative - No significant level of detectable Bordetella pertussis IgM antibody.
1.0-1.1 U/mL: Equivocal - Repeat testing in 10-14 days may be helpful.
1.2 U/mL or greater: Positive - IgM antibody to Bordetella pertussis detected, which may indicate a current or recent exposure/immunization to B. pertussis.
Bordetella pertussis Antibody, IgM by Immunoblot
Negative