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Screening for Type 2 Diabetes
The purpose of screening is early diagnosis and treatment. Screening tests are usually administered to people without current symptoms, but who may be at high risk for certain diseases or conditions.
In order to detect prediabetes and type 2 diabetes, the American Diabetes Association (ADA) recommends the following guidelines:
If the results are normal for both adults and children, the ADA recommends screening again in three years.
The HbA1c test is a good indicator of your average blood glucose levels over the past 2-4 months. This test usually does not require any dietary restrictions.
Fasting Plasma Glucose
With this blood test, you need to fast (not eat anything) for at least eight hours before the test.
Two-Hour Oral Glucose Tolerance Test
After fasting overnight, the doctor tests your glucose level. You are then asked to drink 75 grams of glucose dissolved in water. Two hours later, the doctor tests your glucose level again.
Diabetes mellitus type 2. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/ . Updated August 2, 2012. Accessed December 31, 2012.
Diabetes statistics. American Diabetes Association website. Available at: http://www.diabete... . Accessed December 31, 2012.
Glucose. Lab Tests Online website. Available at: http://labtestsonl... . Updated March 23, 2012. Accessed December 31, 2012.
Prediabetes. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed/ . Updated August 2, 2012. Accessed December 31, 2012.
2/15/2010 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed/what.php : American Diabetes Association. Standards of medical care in diabetes—2010. Diabetes Care. 2010;33(suppl 1:S11-61).
2/15/2010 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed/what.php : American Diabetes Association. Diagnosis and classification of diabetes mellitus. Diabetes Care. 2010;33(suppl 1:S62-69).
Last reviewed September 2013 by Kim Carmichael, MD
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