Categories of increased risk for diabetes (prediabetes)*

FPG 100 to 125 mg/dL (5.6 to 6.9 mmol/L) – IFG

2-hour post-load glucose on the 75 g OGTT 140 to 199 mg/dL (7.8 to 11.0 mmol/L) – IGT

A1C 5.7 to 6.4% (39 to 46 mmol/mol)

FPG: fasting plasma glucose; IFG: impaired fasting glucose; OGTT: oral glucose tolerance test; IGT: impaired glucose tolerance; A1C: glycated hemoglobin.
* For all 3 tests, risk is continuous, extending below the lower limit of the range and becoming disproportionately greater at higher ends of the range.

Reprinted with permission from the American Diabetes Association. Standards of medical care in diabetes—2011. Diabetes Care 2011; 34:S11. Copyright © 2011 American Diabetes Association. Table also published in: American Diabetes Association. Standards of medical care in diabetes—2013. Diabetes Care 2013; 36 Suppl 1:S11. The content within this table is still current as of the 2020 version of the Standards of Medical Care in Diabetes.

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