Description
Why It’s Done
The GAD-65 test may be ordered to:
• Diagnose Type 1 Diabetes (especially in children, adolescents, or lean adults where the diagnosis is uncertain)
• Differentiate between Type 1 and Type 2 Diabetes
• Identify Latent Autoimmune Diabetes in Adults (LADA) – a slow-progressing form of Type 1 diabetes in adults
• Evaluate Unexplained Neurological Symptoms – such as stiff-person syndrome, cerebellar ataxia, or epilepsy, which may be linked to GAD antibodies
• Support Autoimmune Screening – in people with a family history of autoimmune diseases
Preparation
Preparation for the GAD-65 test is simple:
• No fasting is required
• No special dietary or medication restrictions, unless advised by your doctor
• Blood sample: A standard blood draw from a vein in your arm is used for testing
• Inform your doctor of any autoimmune conditions, medications, or symptoms you are experiencing


