How Can You Prepare for an OGTT?
Before the screening occurs, it is important that you inform your doctor about any medicine you are taking. There may be instances wherein you need to discontinue the use of certain medications for the time being.
For at least 8 hours before your first blood sample, you should not eat, drink, smoke, or engage in strenuous exercise. Some people refer to this as fasting before the procedure.
How Is the OGTT Done?
- Like any other blood test, a medical representative will draw some blood samples for evaluation. The first sample shows the level of glucose in your blood after fasting.
- After your blood is taken, you will need to consume a small cup of very sweet liquid containing 50, 75, or 100 grams of glucose.
- As the test goes on, more samples may be taken over the next 1-3 hours, depending on the type of test.
- Because activity can influence test results, you will need to sit quietly for the whole duration of the test. You should also not consume anything during the test.
When all is done, your doctor will notify you when the results are available for viewing.
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