Ordering Recommendation

Evaluation of IgM pertussis antibodies has little clinical utility. CDC-recommended first-line tests for pertussis are Bordetella pertussis/parapertussis by PCR (0065080) and/or Bordetella pertussis Culture (0060117).


Qualitative Immunoblot


Tue, Fri


1-5 days

New York DOH Approval Status

Specimens from New York clients will be sent out to a New York DOH approved laboratory, if possible.

Specimen Required

Patient Preparation

Serum separator tube.

Specimen Preparation

Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.15 mL)

Storage/Transport Temperature


Unacceptable Conditions

Heat-inactivated specimens.


After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year

Reference Interval

Effective February 19, 2013

Bordetella pertussis Antibody, IgM by Immunoblot
Reference Interval
Bordetella pertussis Ab, IgM by Immunoblot Interp Negative
B. pertussis, IgM Immunoblot PT Negative
B. pertussis, IgM Immunoblot FHA Negative

Interpretive Data

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)


This assay tests for the presence of pertussis toxin (PT) and filamentous hemagglutinin antibody (FHA).

Hotline History


CPT Codes



Component Test Code* Component Chart Name LOINC
2004323 B. pertussis Ab, IgM Immunoblot Interp 50398-7
2004324 B. pertussis, IgM Immunoblot FHA 43882-0
2004325 B. pertussis, IgM Immunoblot PT
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.


  • B. pertussis IgM immunoblot
  • Pertussis Antibody
  • Pertussis IgM Ab Immunoblot
Bordetella pertussis Antibody, IgM by Immunoblot