The 668 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA).The 668 area code is not assigned to a city/state location.In most cases with invalid area codes like 668, tend to be used by phone numbers from telemarketing companies.he 668 area code is NOT a valid area code. This area code is NOT officially assigned to a known Numbering Plan Area (NPA).
Fasting glucose (fasting blood glucose, FBG) â this test measures the level of glucose in the blood after fasting for at least 8 hours. 2-hour glucose tolerance test (GTT) â for this test, the person has a fasting glucose test done (see above), then drinks a 75-gram glucose drink. Another blood sample is drawn 2 hours after the glucose drink. This protocol challenges the person's body to process the glucose.
A glucose test measures the amount of glucose in your blood. Glucose, also known as sugar, is your bodyâs main source of energy. Your body converts the carbohydrates you eat into glucose.Glucose testing is done primarily to check for type 1 diabetes, type 2 diabetes, and gestational diabetes.Diabetes is a condition that causes your blood glucose to rise.here are two different types of glucose blood testingâa fasting glucose test and a random glucose test. If you are having a fasting glucose test, you should not eat or drink for eight hours before your test.