Autoimmune diseases are diseases of the immune system where endogenous body tissue is erroneously attacked by the immune system. The detection of these antibodies can indicate the existence of possible diseases. The classification of antibodies also enables the determination of the affected organ. In such cases, the rapid and reliable results of the Enzymimmunoassays are necessary to initiate the correct treatment. Naturally, a systematic therapy is preferred to a general weakening of the immune system.