WHAT YOU NEED TO KNOW: What is a 2 hour postprandial glucose test? A 2 hour postprandial glucose test is done to check your blood sugar 2 hours after a meal. You will be told what you should eat for the meal. You may be asked to drink a special glucose liquid instead of eating. Why might I need a 2 hour postprandial glucose test? You may need this test to learn if you have diabetes mellitus. Ask your healthcare provider for more information about diabetes mellitus. You may need the test if you have the following symptoms: - Blurred vision.
- Excessive hunger.
- Excessive thirst.
- Excessive urination.
- Unexplained weight loss.
How do I prepare for the test? - Your healthcare provider will give you instructions for the test.
- Tell your healthcare provider if you did not finish the meal or drink, or if you vomit.
- You need to rest for the 2 hours before your blood is taken. Activity can give a false blood sugar reading.
- Do not smoke, eat, or drink during the 2 hours.
What do I do after the test? After your blood is taken, the site will be covered with cotton and tape or a bandage. You may remove these after about 20 to 30 minutes. Ask when you will get the results of your test. |