A blood glucose test measures the amount of a type of sugar in your blood called glucose. Glucose comes from carbohydrates in foods that you eat. It's the main source of energy used by your body. Insulin is a hormone that helps your body's cells use the glucose. Insulin is produced in the pancreas and released into the blood when the amount of glucose in the blood rises.
Normally, your blood glucose levels increase slightly after you eat. This increase causes your pancreas to release insulin so that your blood glucose levels don't get too high. Blood glucose levels that remain high over time can damage your eyes, kidneys, nerves, and blood vessels.
Normally, your blood glucose levels increase slightly after you eat. This increase causes your pancreas to release insulin so that your blood glucose levels don't get too high. Blood glucose levels that remain high over time can damage your eyes, kidneys, nerves, and blood vessels.
