GADA (Glutamate-decarboxylase antibody)
This test is done to detect antibodies against glutamic acid decarboxylase, an enzyme found in pancreatic beta cells that produce insulin. The presence of these antibodies indicates an autoimmune attack on insulin-producing cells. It is commonly used to help diagnose type 1 diabetes and latent autoimmune diabetes in adults (LADA), and to distinguish autoimmune diabetes from type 2 diabetes.