What is the cutoff for the 2-hour plasma glucose level to diagnose diabetes during the OGTT?

The cutoff for the 2-hour plasma glucose level to diagnose diabetes during the Oral Glucose Tolerance Test (OGTT) is 200 mg/dL. In the context of diagnosing diabetes, this threshold is part of the diagnostic criteria established by the American Diabetes Association (ADA).

An OGTT is a commonly used test to determine how well the body metabolizes glucose. After fasting, an individual consumes a glucose-rich drink, and blood glucose levels are measured at intervals, including the 2-hour mark. If the plasma glucose level reaches or exceeds 200 mg/dL at this point, it indicates a diagnosis of diabetes. This cutoff is particularly important as it helps differentiate between normal glucose metabolism, impaired glucose tolerance, and diabetes, guiding appropriate management and intervention.

Understanding this cutoff is crucial for clinicians in identifying and managing diabetes effectively and underscores the importance of accurate testing in patient care.