CSACI Position Statement on the Testing of Food-Specific IgG
Elana Lavine, Canadian Society of Allergy and Clinical Immunology
Published in Allergy, Asthma & Clinical Immunology
Abstract
A position statement summarizing evidence on food-specific IgG antibody testing, concluding that these tests should not be used to diagnose food allergy or intolerance.
Methodology
Review of existing literature on IgG antibody physiology and clinical trial evidence (or lack thereof) supporting IgG-guided elimination diets.
Key Findings
Food-specific IgG indicates exposure and tolerance rather than adverse reaction; no controlled evidence supports its use to diagnose intolerance or guide dietary elimination.
Conclusions
CSACI recommends against the use of food-specific IgG testing in the diagnosis of food allergy or intolerance due to lack of validated clinical utility.
Limitations
Position statement rather than primary research; based on synthesis of indirect immunological evidence rather than a new controlled trial.
Related Health Concerns
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