There is no consumer “food sensitivity” blood test that is generally considered reliable or evidence-based; the best option is usually not a test kit, but a clinician-guided approach based on the specific problem you’re trying to diagnose.[1][7][9] If you want the most trustworthy path, use this split: Suspected food allergy: see an allergist for validated IgE testing such as ImmunoCAP and, when appropriate, skin-prick testing.[1] Suspected celiac disease: get celiac blood tests such as tTG/DGP through a clinician.[1] Suspected lactose intolerance or some GI intolerances: ask a GI clinic about a hydrogen/methane breath test.[1] Vague “food sensitivity” symptoms: use a food/symptom journal and a structured elimination-and-rechallenge diet with medical or dietitian supervision, which Cleveland Clinic and nutrition experts describe as more useful than at-home IgG panels.[7][10] What to avoid: IgG/IgG4 food panels sold by brands such as Everlywell, YorkTest, and similar companies are not recommended by allergy organizations for diagnosing sensitivity or intolerance, because IgG often reflects exposure or tolerance rather than a problem.[9][7] Proprietary tests like ALCAT and MRT/LEAP are also not broadly accepted as validated diagnostic tests for food sensitivity.[1] If you want the shortest answer: the “best” test that is not a scam is usually an allergist-ordered IgE test or a GI breath test, depending on symptoms—not a direct-to-consumer food sensitivity kit.[1][7][9] If you tell me your main symptoms (hives, bloating, diarrhea, headache, fatigue, etc.), I can point you to the most appropriate evidence-based test or approach.
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