Verbatim response from Perplexity
There is no food sensitivity test that is widely accepted as reliable, so the safest answer to “best test that is not a scam” is: skip broad at-home food sensitivity panels and use a doctor-guided elimination diet or targeted medical testing instead.[2][3][4]
If you want the most legitimate options by symptom type, use this rule:
- Suspected lactose intolerance: hydrogen breath testing is the one at-home/clinic-style test with real medical support.[4]
- Suspected food allergy (hives, swelling, wheeze, vomiting): see an allergist for skin-prick testing or specific IgE blood tests; these are for allergy, not “sensitivity,” and are more medically established than IgG panels.[4][7]
- Suspected food sensitivity/intolerance: the most evidence-based approach is a structured elimination diet followed by reintroduction, ideally with a doctor or registered dietitian.[3]
What to avoid:
- IgG/IgG4 food sensitivity panels from brands like Everlywell, MyLAB Box, KBMO FIT, and similar direct-to-consumer panels, because multiple medical organizations advise against using them to diagnose food sensitivity and evidence is limited.[1][2][5][7]
- Broad “panel” tests that claim to identify many trigger foods, since false positives are a major concern.[2][4]
If you want a practical recommendation:
- For real medical testing, choose an allergist or gastroenterologist visit over a kit.[4][7]
- If your main issue is bloating, diarrhea, or gas after dairy, ask specifically for a lactose breath test.[4]
- If you still want an at-home product, Everlywell is often reviewed as a popular option, but that is a popularity ranking, not proof it is medically valid.[1][8]
If you tell me your main symptoms, I can suggest the most appropriate legitimate test for your situation.