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.
1 The traditional method of testing your blood sugar is to prick your finger with a lancet (a very short, fine needle). 2  You then put a drop of blood on a test strip and place the strip into a special measuring device known as a glucose meter. 3  This then displays your blood sugar level. Traditional home blood glucose monitoring. 2  The traditional method of testing your blood sugar is to prick your finger with a lancet (a very short, fine needle). 3  You then put a drop of blood on a test strip and place the strip into a special measuring device known as a glucose meter.