What is a fasting blood glucose test?
This is one of the tests used to diagnose diabetes or prediabetes, which are risk factors for heart disease. If you have prediabetes, you are at a high risk of developing diabetes, as well as heart disease and stroke. The other diagnostic test for diabetes is the oral glucose tolerance test. Both are done on a blood sample after a fast to see how much glucose (or sugar) is in the blood. With the oral glucose tolerance test, blood samples are taken before and after you drink a high-glucose beverage.
