A1C At Home Test Kits allow you to test your HbA1C from the privacy of your own home. A1C testing measures your average blood sugar over the course of the last 3 months. It helps you maintain better control of your blood sugar in essence helping you control your diabetes. Time Magazine, Inc. calls A1c the "gold standard in diabetes testing." The American Diabetes Association recommends 2-4 A1c tests per year