Diabetes Mellitus Criteria (ADA)
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Symptoms of diabetes (e.g., polyuria, polydipsia, unexplained weight loss) in addition to a random glucose level >=200 mg/dL (11.1 mmol/L) Yes No Unknown
Fasting blood glucose >=126 mg/dL (7.0 mmol/L), after a minimum of an 8-hour fast Yes No Unknown
Glucose level >=200 mg/dL (11.1 mmol/L) 2 hrs after glucose challenge (GTT) w/standardized 75 gram oral load of glucose Yes No Unknown
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Diabetes Mellitus Criteria (ADA)

The American Diabetes Association's (ADA) criteria for diagnosing Diabetes Mellitus include 3 possible methods to make the diagnosis:

  • Symptoms of diabetes (e.g., polyuria, polydipsia, unexplained weight loss) in addition to a random glucose level >=200 mg/dL (11.1 mmol/L).
  • Fasting blood glucose >=126 mg/dL (7.0 mmol/L), after a minimum of an 8-hour fast
  • Glucose level >=200 mg/dL (11.1 mmol/L) 2 hrs after glucose challenge (GTT) with standardized 75 gram oral load of glucose

*Note that any one of these items should be confirmed by repetition on a subsequent day; except in the case of unequivocal hyperglycemia. The Oral Glucose Challenge is not recommended routinely.

References :

  • The Expert Committee on the Diagnosis and Classification of Diabetes Mellitus: Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus. Diabetes Care 1997;20:1183-1197.
  • The Expert Committee on the Diagnosis and Classification of Diabetes Mellitus: Follow-up report on the diagnosis of diabetes mellitus. Diabetes Care 2003;26:3160-3167.
  • Diagnosis and Classification of Diabetes Mellitus. American Diabetes Association (Position Statement). Diabetes Care 2006;29:S43-48.