Measures IgG, IgA, and IgM antibodies against bacterial toxins, tight junction and cytoskeletal proteins (Array 2, 22), and blood-brain barrier proteins (Array 20).Detects disturbance of gut flora in the small and large intestine, and damage done to the gut and blood-brain structures that set the stage not only for leaky gut and leaky brain, but for the development of SIBO/IBS, inflammation, autoimmunity, neuroautoimmunity, and neurodegenerative disorders.