Measures IgG, IgA, and IgM antibodies against bacterial cytotoxins and cytoskeletal proteins. Detects the overgrowth of large intestinal bacteria in the small intestine and evaluates the release of bacterial cytotoxins and their breach of the intestinal barrier. Developed and published by Aristo Vojdani, PhD, MSc, CLS, known as the father of functional immunology, in 2014 and 2019.