What are the ADA diagnostic criteria for prediabetes?

Updated: Jul 08, 2020
  • Author: Samuel T Olatunbosun, MD, FACP, FACE; Chief Editor: George T Griffing, MD  more...
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A diagnosis of prediabetes is made if one of the following criteria are met [1] :

  • IFG: FPG 100 mg/dL (5.6 mmol/L) to 125 mg/dL (6.9 mmol/L) 
  • IGT: OGTT 2-hour PG 140 mg/dL (7.8 mmol/L) to 199 mg/dL (11.0 mmol/L) 
  • HBA1C 5.7−6.4% (39−47 mmol/mol)

The ADA notes that for all three tests, risk extends below the lower limit of the range and becomes greater at the higher end of the range.

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