They're all junk, and should be banned': the trouble with at-home food intolerance tests

"Given that I don't have any food or environmental allergies or intolerances, all three tests should show exactly the same thing: nothing."

"It's hard to know exactly how much we are spending on either home allergy or home intolerance tests, or how many of us are doing them."

"Globally, allergy diagnostics generate about $5.3bn of revenue a year, and the at-home food sensitivity test market was valued at $2.6m in 2025."

The kitchen table is set up for three different allergy and intolerance tests, including a food intolerance blood test and an ALEX2 allergy blood test. The tests are conducted at home, with the intention of comparing results from samples taken on the same day. Despite not having allergies or intolerances, the individual anticipates that all tests will yield the same negative results. The global market for allergy diagnostics generates substantial revenue, raising questions about the accuracy and necessity of at-home testing.

Read at www.theguardian.com