Glutamic acid decarboxylase (GAD) is an enzyme that is found within the islet cells of the pancreas
.These are the cells that produce insulin
in healthy,non diabetic individuals.there is a report that around 70 percent of patients diagnosed with Type 1 diabetes
will test positive for this antibody at the time of diagnosis.However It is important to note that this testing positive for anti-GAD antibodies
does not mean that a patient does have Type 1 diabetes; furthermore, having a negative GAD antibody test does not mean that Type 1 diabetes is an incorrect diagnosis. However, a positive GAD antibody test may suggest to a physician that a patient with symptoms of high blood sugar may indeed have Type 1 diabetes.
Since your sugar levels are normal,a positive GAD test suggests that you are at risk of developing diabetes in future.Consult your doctor and get anti insulin antibodies as well as
Islet cell antibodies estimation done,since two positive in these three tests increase the chance of developing diabetes in near future.