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Exams and Tests

Who should be tested for prediabetes?

If you haven't yet been diagnosed with prediabetes, you may want to talk to your doctor about testing. The American Diabetes Association recommends testing adults for prediabetes, which may lead to type 2 diabetes, if you:1

If the tests are normal, the American Diabetes Association recommends repeat testing at least every 3 years.

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A child who weighs too much may develop serious health problems, including type 2 diabetes. For more information about testing children for diabetes, see the topic Type 2 Diabetes in Children.

What tests will you have for prediabetes?

Your doctor will do a medical history, a physical exam, and blood glucose testing to find out if you have prediabetes and are at risk for getting type 2 diabetes.

Blood tests used to identify prediabetes in adults include:

You have prediabetes if:

  • The results of your A1c test are 5.7% to 6.4%. For all of these tests, lower numbers are best.
  • The results of your fasting blood glucose test are 100 to 125 milligrams per deciliter (mg/dL).
  • The results of your OGTT are 140 to 199 mg/dL (2 hours after the beginning of the test).

Phrases such as "a touch of diabetes," "borderline diabetes," and "your sugar is a little high" are unclear. If you hear these phrases, ask your doctor if your blood sugar level is in the prediabetes or diabetes range.

Tests for other health problems

If you are diagnosed with prediabetes, your doctor may also want to:

  • Check your blood pressure.
  • Do a blood test to check your cholesterol levels.
  • Test your blood sugar regularly to check for type 2 diabetes.

WebMD Medical Reference from Healthwise

Last Updated: June 20, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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If the level is below 70 or you are experiencing symptoms such as shaking, sweating or difficulty thinking, you will need to raise the number immediately. A quick solution is to eat a few pieces of hard candy or 1 tablespoon of sugar or honey. Recheck your numbers again in 15 minutes to see if the number has gone up. If not, repeat the steps above or call your doctor.

People who experience hypoglycemia several times in a week should call their health care provider. It's important to monitor your levels each day so you can make sure your numbers are within the range. If you are pregnant always consult with your health care provider.

Congratulations on taking steps to manage your health.

However, it's important to continue to track your numbers so that you can make lifestyle changes if needed. If you are pregnant always consult with your physician.

Your level is high if this reading was taken before eating. Aim for 70-130 before meals and less than 180 two hours after meals.

Even if your number is high, it's not too late for you to take control of your health and lower your blood sugar.

One of the first steps is to monitor your levels each day. If you are pregnant always consult with your physician.

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