Questions people ask about IgG Unverträglichkeit Labor

IgG tests for food intolerances are commonly marketed by labs, but the scientific evidence for their clinical utility is weak. IgG antibodies to foods often reflect normal immune exposure rather than intolerance or allergy. Major medical societies (e.g., European Academy of Allergy and Clinical Immunology) advise against such tests because they can lead to unnecessary dietary restrictions and misinterpretation. Results are often not reproducible and correlate poorly with actual symptoms. Instead of IgG testing, established methods like symptom-guided food diaries, elimination diets under medical supervision, or – for true allergies – IgE testing or skin prick tests should be used. MyBody-X does not offer IgG tests; it focuses on DNA and microbiome analyses, which also have limited clinical utility. Consumers should be skeptical of direct-to-consumer IgG lab tests marketed as 'intolerance checks.' The evidence level is 'marketing' because these tests are commercially promoted without robust clinical validation.