The most effective positive way to understand when you have diabetes is to honestly have your health practitioner test you.HL12 There are some signs and if you enjoy any of those symptoms, then you may want to ask your medical doctor to test you for diabetes. One cause you should ask your medical doctor to test you is in case your close circle of relatives members have diabetes. Diabetes can be inherited and your possibilities are excellent that you could get diabetes in case your mother, father or grandparents be afflicted by diabetes.