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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.
It is estimated that 16 million Americans have prediabetes . This condition is characterized by high blood glucose levels that are not high enough to be diagnosed as diabetes. But, the condition often progresses to type 2 diabetes .
In order to detect prediabetes and take steps to prevent its progression to 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.
As part of your routine physical exam, your doctor may draw some blood to check your liver, kidney, and endocrine functions, including blood glucose. This blood is taken any time of day, without regard to when you have last eaten. A measure of 200 milligrams per deciliter (mg/dl) [11.1 mmol/L] may indicate diabetes. In this case, your doctor will do further testing to determine if you have diabetes.
Blood glucose testing is often done at health fairs, as well. Here, you will need to give only a few drops of blood from your fingertip, and you will have results within a few minutes. If the results indicate that your blood glucose level is high, you should see your doctor for further testing. Keep in mind, though, that the results from a health fair screening are not as accurate as the tests that your doctor does.
References:
AACE Diabetes Mellitus Clinical Practice Guidelines Task Force. Medical guidelines for the clinical practice for the management of diabetes mellitus. American Association of Clinical Endocrinologists website. Available at: http://www.aace.com/pub/pdf/guidelines/DMGuidelines2007.pdf. Published 2007. Accessed February 12, 2010.
Agency for Healthcare Research and Quality. Task force issues two recommendations on diabetes screening for adults and pregnant women [news release]. February 3, 2003.
American Diabetes Association. American Diabetes Association position statement: standards of medical care in diabetes 2010. Diabetes Care. 2010;33:S1-S99.
American Diabetes Association website. Available at: http://www.diabetes.org . Accessed February 12, 2010.
Endocrine Society website. Available at: http://www.endo-society.org. Accessed February 12, 2010.
Gillis CL, Abrams KR, Lambert PC, et al. Pharmacological and lifestyle interventions to prevent or delay type 2 diabetes in people with impaired glucose tolerance: systematic review and meta-analysis. Brit Med J. 2007;334:299-302.
Harris R, Donahue K, Rathore SS, et al. Screening adults for type 2 diabetes: a review of the evidence for the US Preventive Services Task Force. Ann Intern Med . 2003;138(3):215-229.
US Preventive Services Task Force. Screening for type 2 diabetes mellitus in adults: US Preventive Services Task Force recommendation statement. Ann Intern Med. 2008;148:846-54.
US Preventive Services Task Force. Screening for type 2 diabetes mellitus in adults: recommendations and rationale. Ann Intern Med . 2003;138(3):212-214.
2/15/2010 DynaMed's Systematic Literature Surveillance DynaMed's Systematic Literature Surveillance: 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 DynaMed's Systematic Literature Surveillance: American Diabetes Association. Diagnosis and classification of diabetes mellitus. Diabetes Care. 2010;33(suppl 1:S62-69).
Last reviewed February 2010 by Bridget Sinnott, MD, FACE
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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