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Nutrition

IgG Food Panel Accuracy Myth

IgG food panel accuracy myth clarifies that IgG blood tests reflect exposure—not a license to eliminate long food lists without symptom-linked trials.

IgG food panel accuracy myth debunks direct-to-consumer blood tests that flag dozens of foods—IgG often reflects exposure, not pathology, and major allergy societies do not recommend them to diagnose intolerance or allergy. False positives lead to over-restricted diets, poor calcium and fiber intake, and social stress.

Proper workup uses history, elimination with reintroduction, breath tests, and IgE testing when allergy is suspected.

Common questions

  • Why do IgG panels list foods you eat often?

    Frequent exposure can raise IgG without proving harm—removing staple foods based on the panel alone risks nutrition gaps without symptom improvement.

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