| It's one of the tests - anyone with an elevated fasting blood glucose (FBG) after 12 hours is likely to have diabetes. That doesn't mean that everyone with diabetes necessarily 'fails' the FBG test. When that happens, then the usual next test is the glucose tolerance test (GTT), which was the test you did when you drank the Coke. Most people with T1 will 'fail' the FBG test. People with T1.5 or T2 tend can fare differently on the FBG test, hence the GTT as another check. |