Periplaneta americana Ab.IgG4
The level of IgG4 antibodies in your blood specific to American cockroach allergens.
Why This Biomarker Matters
IgG4 elevation indicates chronic cockroach exposure and immune sensitization, helping doctors diagnose cockroach-related allergies and monitor treatment responses.
Overview
This test measures IgG4 antibodies to American cockroach allergens, a different immune response than the IgE-mediated allergies. IgG4 antibodies may indicate chronic or repeated exposure to cockroach allergens. Elevated IgG4 levels can be associated with allergic asthma, allergic rhinitis, or atopic dermatitis triggered by cockroach exposure. This marker is useful in diagnosing cockroach allergies and assessing the effectiveness of allergen avoidance or immunotherapy treatments over time.
Technical Information (LOINC Codes)
Standardized laboratory codes for this biomarker
56173-8PrimaryAvailable Lab Tests
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