A glucose tolerance test result of 205 mg/dl indicates diabetes.

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Multiple Choice

A glucose tolerance test result of 205 mg/dl indicates diabetes.

Explanation:
Understanding how the oral glucose tolerance test is used to diagnose diabetes helps interpret this result. In an OGTT, after fasting, a person drinks a standard 75 g glucose solution and blood glucose is checked 2 hours later. The diagnostic thresholds are clear: a 2-hour glucose of 200 mg/dL or higher confirms diabetes; a 2-hour value of 140–199 mg/dL indicates impaired glucose tolerance (prediabetes); and values under 140 mg/dL are considered normal. A 2-hour reading of 205 mg/dL is above the diabetes threshold, so it indicates diabetes. Values in the 140–199 range would suggest prediabetes, while normal would be below 140. The category “borderline” isn’t an official diagnostic label in modern guidelines.

Understanding how the oral glucose tolerance test is used to diagnose diabetes helps interpret this result. In an OGTT, after fasting, a person drinks a standard 75 g glucose solution and blood glucose is checked 2 hours later. The diagnostic thresholds are clear: a 2-hour glucose of 200 mg/dL or higher confirms diabetes; a 2-hour value of 140–199 mg/dL indicates impaired glucose tolerance (prediabetes); and values under 140 mg/dL are considered normal. A 2-hour reading of 205 mg/dL is above the diabetes threshold, so it indicates diabetes. Values in the 140–199 range would suggest prediabetes, while normal would be below 140. The category “borderline” isn’t an official diagnostic label in modern guidelines.

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