Dr. Henry Do explains the difference between a fasting plasma glucose test and an oral glucose tolerance test.
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Fasting blood glucose test is a one time test. The patient doesn’t eat or drink in the night before the test and the following go in and get a routine blood draw. An oral glucose tolerant set is usually used mostly for patients who are pregnant women and for gestational diabetes. That’s done a little bit differently. The patients take an oral solution of glucose and then the blood sugars are measured at periodic times after that. So it’s a little bit of a different screening test for diabetes using different patient populations.