Measures total and specific salivary IgA against 25 different antigens that are major components of the GI tract or are introduced into it. Detects the overall integrity of the mucosal immune system, also known as our body’s first line of defense. It also detects early events associated with broken oral tolerance to many external and internal factors that are involved in the induction of leaky gut, food and chemical immune reactivity, and autoimmunity. It detects early signs and signals of autoimmunities before their appearance in the blood. Developed, published, and patented by Aristo Vojdani, PhD, MSc, CLS, known as the father of functional immunology in 2004 and 2007.