Which autoantibody is commonly present and highly specific for type 1 diabetes?

Which autoantibody is commonly present and highly specific for type 1 diabetes?

• A. GAD-65 autoantibodies
• B. IA-2 autoantibodies
• C. Islet cell cytoplasmic autoantibodies
• D. Insulin autoantibodies

Answer: (A)

Autoimmune destruction of pancreatic beta cells often shows up with specific autoantibodies, and the most commonly detected, highly specific one in type 1 diabetes targets GAD-65. GAD-65 is an enzyme in beta cells, and autoantibodies against it are frequently present at diagnosis and help distinguish autoimmune diabetes from other forms. While other autoantibodies like IA-2, islet cell cytoplasmic antibodies, or insulin autoantibodies can be seen, they are either less consistently present or less specific, making GAD-65 the best marker in this context.

Autoimmune destruction of pancreatic beta cells often shows up with specific autoantibodies, and the most commonly detected, highly specific one in type 1 diabetes targets GAD-65. GAD-65 is an enzyme in beta cells, and autoantibodies against it are frequently present at diagnosis and help distinguish autoimmune diabetes from other forms. While other autoantibodies like IA-2, islet cell cytoplasmic antibodies, or insulin autoantibodies can be seen, they are either less consistently present or less specific, making GAD-65 the best marker in this context.