What to watch with Leaky Gut Test and allergy?

The Leaky Gut Test (measuring markers like zonulin, LPS, or α-1-antitrypsin) is often marketed for allergy assessment, but the evidence is weak. Increased intestinal permeability may contribute to food sensitivities or systemic inflammation, but a positive result does not confirm an allergy. Allergies are diagnosed via IgE antibodies or skin prick tests. This test can be used as a screening tool or to monitor gut barrier function, but it is not validated for allergy diagnosis. Caution: many commercial tests overstate clinical utility. Always consult a doctor for allergy evaluation and do not make dietary or supplement changes solely based on a leaky gut result.