Pre-Diabetes Mellitus Criteria (ADA)
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Fasting plasma glucose is 100-125 mg/dL or 5.6-6.9 mmol/L (After minimum 8 hour fast) Yes No Unknown
Glucose level >=140 mg/dL (7.8 mmol/L) but <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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Pre-Diabetes Mellitus Criteria (ADA)

The American Diabetes Association's (ADA) criteria for diagnosing "Impaired Glucose Tolerance" (IGT) or "Impaired Fasting Glucose (IFG)" include:

  • Blood plasma glucose is 100-125 mg/dL or 5.6-6.9 mmol/L OR
  • Glucose level =140 mg/dL (7.8 mmol/L) but 200 mg/dL (11.1 mmol/L) 2 hours after glucose challenge (GTT) with standardized 75 gram oral load of glucose

IGT or IFG, if left untreated, is high risk to develop into type 2 diabetes within 10 years.

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(7):1183-97.

Genuth S, Alberti KG, Bennett P, et al. Follow-up report on the diagnosis of diabetes mellitus. Diabetes Care. 2003;26(11):3160-7.

American Diabetes Association. Diagnosis and classification of diabetes mellitus. Diabetes Care. 2006;29 Suppl 1:S43-8.