I have one child who has type 1 diabetes with positive GAD. Her sister has Juvenille Idiopathic Arthritis and Ehler-Danlos (diagnosed several years before her sister with type 1 diabetes). I have PCOS and their father has hemochromatosis. Should I have my daughter's rheumatologist test for GAD presence in my other child? Is there any higher risk that she will also develop type 1 diabetes?