Food sensitivities affect over 100 million people globally, causing symptoms like skin rashes and chronic gastrointestinal issues. The FIT Test is a patented, multi-pathway delayed food sensitivity test that measures both IgG and Immune Complexes, the most common food-related immune responses. The FIT 132 test assesses sensitivities to 132 foods and additives, helping patients reduce symptoms through targeted food elimination. KBMO has introduced the Gut Barrier Panel (GB Panel) with the FIT 132 Tests, which helps providers assess the severity of gut dysfunction, from food sensitivity to leaky gut. The GB Panel includes key markers—Candida, Zonulin, Occludin, and Lipopolysaccharides (LPS)—and measures IgG and IgA to evaluate gut health comprehensively. It includes IgG subtypes 1-4/C3d and IgA subtypes 1 and 2 for each marker, providing a comprehensive view of gut health for more personalized treatment.