Final answer:
The criteria for the diagnosis of diabetes, as per the American Diabetes Association, include a Fasting Plasma Glucose ≥ 126 mg/dL or a Hemoglobin A1c ≥ 6.5%. The OGTT for a diabetes diagnosis requires a level ≥ 200 mg/dL after 2 hours, which is not mentioned in the options given. Therefore, the correct answers are FPG ≥ 126 mg/dL and HbA1c ≥ 6.5% only.
Step-by-step explanation:
Criteria for the Diagnosis of Diabetes
According to the American Diabetes Association, the criteria for the diagnosis of diabetes include several tests. A Fasting Plasma Glucose (FPG) ≥ 126 mg/dL indicates a diagnosis of diabetes. This test measures the blood glucose after fasting for at least 12 hours. A normal fasting level is below 100 mg/dL, while a reading between 100 and 125 mg/dL indicates pre-diabetes. Hemoglobin A1c (HbA1c) ≥ 6.5% also meets the criteria for a diabetes diagnosis. HbA1c reflects the average blood glucose level over the past two to three months. An Oral Glucose Tolerance Test (OGTT) is another criterion for diagnosing diabetes. This test involves drinking a glucose-rich beverage and measuring blood glucose levels at intervals afterward. For the OGTT, a level ≥ 200 mg/dL after 2 hours is considered diabetic, not ≥ 140 mg/dL which is a normal response post-meal. Therefore, only the FPG and HbA1c values mentioned meet the ADA criteria for the diagnosis of diabetes.