2-Hour Postprandial Glucose Test
Medically reviewed by Drugs.com. Last updated on May 6, 2024.
AMBULATORY CARE:
A 2-hour postprandial glucose test
is done to check your blood sugar 2 hours after a meal.
Why you may 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
- More hunger than usual
- More thirst than usual
- Urinating often
- Weight loss without trying
How to prepare for the test:
- Your healthcare provider will give you instructions for the test.
- You will be told what you should eat before the test, and when to do this. You may be asked to drink a glucose liquid instead of eating food.
- Tell your 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 to 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.
Follow up with your doctor as directed:
Your doctor will go over the results of the test with you. He or she will tell you next steps if the test shows you may have diabetes. Write down your questions so you remember to ask them during your visits.
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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.
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