What are the ADA diagnostic criteria for type 2 diabetes mellitus (DM)?

Updated: Oct 23, 2019
  • Author: Romesh Khardori, MD, PhD, FACP; Chief Editor: George T Griffing, MD  more...
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Answer

Diagnostic criteria by the American Diabetes Association (ADA) include the following [1] :

  • A fasting plasma glucose (FPG) level of 126 mg/dL (7.0 mmol/L) or higher, or

  • A 2-hour plasma glucose level of 200 mg/dL (11.1 mmol/L) or higher during a 75-g oral glucose tolerance test (OGTT), or

  • A random plasma glucose of 200 mg/dL (11.1 mmol/L) or higher in a patient with classic symptoms of hyperglycemia or hyperglycemic crisis

Whether a hemoglobin A1c (HbA1c) level of 6.5% or higher should be a primary diagnostic criterion or an optional criterion remains a point of controversy.


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