Verbatim response from Perplexity
There is no food sensitivity test that is clearly “not a scam” in the sense of being scientifically well validated for diagnosing most food sensitivities.[2][4][10] The most reliable approach is usually an elimination diet guided by a clinician or registered dietitian, and for specific issues like lactose intolerance, a hydrogen breath test is one of the few supported options.[3][4]
If you want a direct answer for buying, the safest recommendation is:
- Best overall approach: a clinician-guided elimination diet rather than a commercial blood test.[3][4]
- Best commercial option if you insist on a test: none are strongly evidence-based; even popular direct-to-consumer tests like Everlywell are marketed as food sensitivity tests, but major medical sources say IgG-based tests are not reliable for diagnosing sensitivity.[1][2][8]
- Best test for a specific symptom pattern: lactose intolerance breath testing through a medical provider or clinic, not a broad “food sensitivity panel.”[4][9]
Why I’m not recommending the common kits:
- Many at-home food sensitivity tests rely on IgG antibodies, which multiple medical organizations say do not reliably diagnose food sensitivity and may produce false positives.[2][5][10]
- Broad panels can lead to unnecessary food restriction without fixing the real cause of symptoms.[2][4][6]
- Even reviews that rank products, such as Fortune’s, are ranking consumer products, not validating them as medically proven diagnostic tools.[1]
If you’re trying to figure out what foods actually bother you, the most practical path is:
- keep a symptom and meal log,
- do a structured elimination and reintroduction plan,
- and get checked for allergy, celiac disease, lactose intolerance, IBS, or other GI conditions depending on your symptoms.[2][3][4]
If you want, I can help you choose between Everlywell, Quest, KBMO FIT, or no test at all based on your symptoms and budget.