Screening for Type 2 Diabetes Author: Lorraine Lipscombe, MD, FRCPC; Denice S. Feig, MD, MSc, FRCPC
Editorial changes - 2010-01-07
Author information and module status
Key Points
Population at Risk
Effectiveness/Harms of Screening Tests
Effectiveness/Harms of Early Treatment
Direct Evidence that Screening Reduces Adverse Outcomes
Timeline
Cost-Effectiveness
Patient Education
Referral/Consultation
Guidelines

Tables
References
Glossary
What's New
Patient Information
Additional Resources
Tools
Guidelines
   American Diabetes Association, 2007
 Standards of medical care in diabetes—2007
    Testing for diabetes should be considered in all individuals aged 45 years or older, particularly in those with a BMI 25 kg/m2, and, if normal, should be repeated at 3-year intervals. Testing should be considered at a younger age or be carried out more frequently in individuals who are overweight (BMI 25 kg/m2) and have the following additional risk factors: habitual physical inactivity; first-degree relative with diabetes; member of a high-risk ethnic population (e.g., black, Latino, Native American, Asian American, Pacific Islander); delivery of a baby weighing more than 9 lbs. or diagnosis of gestational diabetes; hypertension (BP 140/90 mm Hg); HDL cholesterol level <35 mg/dL (0.90 mmol/L) and/or triglyceride level >250 mg/dL (2.82 mmol/L); polycystic ovary syndrome; impaired glucose tolerance or impaired fasting glucose on previous testing; other clinical conditions associated with insulin resistance (e.g., polycystic ovary syndrome or acanthosis nigricans); history of vascular disease.
   American Diabetes Association, 2004
 Screening for type 2 diabetes
    All persons should be screened using an FBG test at 3-year intervals beginning at age 45; testing should be considered at an earlier age or be carried out more frequently in those who are overweight if additional diabetes risk factors are present.
   Annals of Internal Medicine, 2003
 Screening for type 2 diabetes mellitus in adults: recommendations and rationale
    The U.S. Preventive Services Task Force (USPSTF) concludes that the evidence is insufficient to recommend for or against routinely screening asymptomatic adults for type 2 diabetes, impaired glucose tolerance, or impaired fasting glucose. This is a grade I recommendation.
   Canadian Diabetes Association, 2003
 Clinical practice guidelines for the prevention and management of diabetes in Canada: Screening and prevention
    Screening for diabetes using an FBG test should be performed every 3 years in persons aged 40 years or older, and more frequent or earlier testing should be done in those with risk factors for diabetes.
   Canadian Task Force on Preventive Medicine, 1994
 Screening for diabetes mellitus in the non-pregnant adult
    The CTF found fair evidence to exclude diabetes screening of the nonpregnant population from the periodic health examination.
   U.S. Preventive Services Task Force, 2008
 Screening for type 2 diabetes mellitus in adults
    The USPSTF recommends screening for type 2 diabetes in asymptomatic adults with sustained BP >135/80 mm Hg (B recommendation) and concludes that the current evidence is insufficient to determine the balance of benefits and harms of screening for type 2 diabetes in asymptomatic adults with BP 135/80 mm Hg.
FAQs
Denice S. Feig, MD, MSc, FRCPC has no financial relationships with pharmaceutical companies, biomedical device manufacturers, or health-care related organizations. Lorraine Lipscombe, MD, FRCPC has no financial relationships with pharmaceutical companies, biomedical device manufacturers, or health-care related organizations. Sonal Singh, MD, editorial consultant, has no financial relationships with pharmaceutical companies, biomedical device manufacturers, or health-care related organizations.
Darren B. Taichman, MD, PhD, Editor, PIER, has received grant support from Actelion Pharmaceuticals Ltd , and honoraria for continuing medical education grand rounds and lectures given.


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