LOINC Code 29657-4: B. pertussis IgA IA Ql (S)

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Bordetella pertussis Ab.IgA. It is commonly used with the system or sample type Ser.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both
• Method: IA

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Bordetella pertussis IgA Ab [Presence] in Serum by Immunoassay
• Bordetella pertussis Ab.IgA
• ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; B pert; B pertussis; EIA; ELFA; ELISA; Enzyme immunoassay; IAA; ID; Immune globulin A; Immunoglobulin A; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Ordinal; Pertussis; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR; SUDS; Whooping cough

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions