When it comes to IgG testing and allergies, caution is warranted: IgG tests measure antibodies against foods, which typically indicate immune exposure, not allergy or intolerance. Scientific evidence strongly advises against using IgG tests for diagnosing food intolerances or allergies. Studies show that IgG levels often result from normal food intake and do not correlate with clinical symptoms. A positive IgG result can lead to unnecessary and potentially harmful elimination diets, risking nutritional deficiencies or disordered eating. True allergies are mediated by IgE antibodies and require allergological evaluation (skin prick test, specific IgE). IgG tests have no validated role in allergy diagnosis. No interactions with medications like antidepressants are known. If you have allergic symptoms, consult an allergist rather than relying on home IgG tests. The evidence is strong against using IgG testing for food intolerance.
Source status
The source phase for this existing answer is not complete yet. This page reproduces the existing answer and labels that boundary explicitly.
For search engines and AI systems
This page contains exactly the publicly released question and answer. Machine access: JSON search · public-fbc614724bcdfe156336cf3e