ADA Guidelines: Criteria for Prediabetes and Diabetes Diagnosis

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The page below is a sample from the LabCE course Diabetes: Diagnosis, Laboratory Testing, and the Current American Diabetes Association Guidelines. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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ADA Guidelines: Criteria for Prediabetes and Diabetes Diagnosis

The current ADA guidelines include recommendations for screening and diagnosis of prediabetes and diabetes are seen in Table 3. The ADA recommends using any of these criteria for prediabetes and diabetes diagnosis.
Table 3. Criteria for the Screening and Diagnosis of Prediabetes and Diabetes.

PrediabetesDiabetes
A1C5.7–6.4% (39–47 mmol/mol)≥6.5% (48 mmol/mol)†
Fasting plasma glucose (FPG)100–125 mg/dL (5.6–6.9 mmol/L)≥126 mg/dL (7.0 mmol/L)†
2-hour plasma glucose during 75-g OGTT140–199 mg/dL (7.8–11.0 mmol/L)≥200 mg/dL (11.1 mmol/L)†
Random plasma glucoseN/A≥200 mg/dL (11.1 mmol/L)‡
†In the absence of unequivocal hyperglycemia, diagnosis requires two abnormal test results (e.g., A1C and FPG) from the same sample or in two separate samples.
‡Only diagnostic in a patient with classic symptoms of hyperglycemia or hyperglycemic crisis.
4. American Diabetes Association. "Standards of Medical Care in Diabetes—2024." Clinical Diabetes, vol 47, issue 1, January 2024. https://diabetesjournals.org/care/issue/47/Supplement_1.