Leaky Gut Test: when to see a doctor?

Deciding when to see a doctor based on a 'leaky gut' test is challenging because there is no universally accepted clinical definition or validated test for intestinal permeability in routine practice. Markers such as zonulin, LPS, or alpha-1-antitrypsin are used in research but lack standardization and clinical cut-offs. The provided context on IL-6 and CRP highlights that inflammatory biomarkers are not equivalent to a leaky gut diagnosis. You should see a doctor if you have persistent gastrointestinal symptoms (bloating, diarrhea, pain) or systemic issues like fatigue, regardless of test results. Genetic variants (e.g., IL6) have no proven role in guiding treatment for leaky gut. Be cautious of commercial tests that overstate their value; the evidence for their clinical utility is weak. A physician can evaluate symptoms comprehensively and rule out other conditions like IBD or celiac disease.