what is the difference between fasting blood sugar and postprandial
Several different types of blood glucose tests are used. Fasting blood sugar (FBS) measures blood glucose after you have not eaten for at least 8 hours. It often is the first test done to check for diabetes. 2-hour postprandial blood sugar measures blood glucose exactly 2 hours after you eat a meal. blood glucose test measures the amount of a type of sugar, called glucose, in your blood. Glucose comes from carbohydrate foods. It is the main source of energy used by the body.