"Health care professionals most often use the fasting plasma glucose (FPG) test or the A1C test to diagnose diabetes. In some cases, they may use a random plasma glucose (RPG) test. The FPG blood test measures your blood glucose level at a single point in time. For the most reliable results, it is best to have this test in the morning, after you fast for at least 8 hours. Fasting means having nothing to eat or drink except sips of water. The A1C test is a blood test that provides your average levels of blood glucose over the past 3 months. Other names for the A1C test are hemoglobin A1C, HbA1C, glycated hemoglobin, and glycosylated hemoglobin test. You can eat and drink before this test. When it comes to using the A1C to diagnose diabetes, your doctor will consider factors such as your age and whether you have anemia or another problem with your blood. The A1C test is not accurate in people with anemia. Research such as the Diabetes Prevention Program shows that you can do a lot to reduce your chances of developing type 2 diabetes. You may be able to prevent or delay diabetes by losing 5 to 7 percent of your starting weight. For instance, if you weigh 200 pounds, your goal would be to lose about 10 to 14 pounds. Get at least 30 minutes of physical activity 5 days a week. If you have not been active, talk with your health care professional about which activities are best. Start slowly to build up to your goal. Eat healthy foods most of the time. Eat smaller portions to reduce the amount of calories you eat each day and help you lose weight. Choosing foods with less fat is another way to reduce calories. Drink water instead of sweetened beverages. Although diabetes has no cure, it can be managed by taking the right steps to stay healthy. Follow a diabetes meal plan: choose fruits and vegetables, beans, whole grains, chicken or turkey without the skin, fish, lean meats, and nonfat or low-fat milk and cheese. Drink water instead of sugar-sweetened beverages. Choose foods that are lower in calories, saturated fat, trans fat, sugar, and salt. Engage in physical activity daily. Try to work up to 30 minutes or more of physical activity on most days of the week. Brisk walking and swimming are good ways to move more. Take appropriate medicine for diabetes and any other health problems, even when feeling good or having reached healthy blood glucose, blood pressure, and cholesterol goals. For many people with diabetes, checking their blood glucose level each day is an important way to manage their diabetes. Monitoring blood glucose levels is most important for anyone taking insulin. The results of blood glucose monitoring can help people with diabetes make decisions about food, physical activity, and medicines. The most common way to check a blood glucose level at home is with a blood glucose meter. You get a drop of blood by pricking the side of your fingertip with a lancet. Then you apply the blood to a test strip. The meter will show you how much glucose is in your blood at the moment."