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Hemoglobin A1c and the Estimated Average Glucose



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International Expert Committee Report on the Role of the A1c Assay in the Diagnosis of Diabetes

Slide 24

July 2009

Very recently HbA1c was endorsed by an international expert committee to be used in the diagnosis of diabetes.  A cutpoint of 6.5% was recommended based on the sensitivity and specificity of several studies.  An elevated HbA1c should be confirmed with a repeat measurement except in those individuals who are symptomatic and also have an increased plasma glucose over 200 mg/dL.  The terms pre-diabetes, impaired fasting glucose, and impaired glucose tolerance will be phased out to eliminate confusion.  Patients who have an HbA1c >=6.0  but <=6.5% are still considered at risk for developing diabetes in the future.  There is no endorsement of HbA1c for diabetes screening at this time.

International Expert Committee Report

 


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