[Expert Solution]: After several years of skipping his annual…

After several years of skipping his annual physical appointment, Marvin, a 62-year-old retired White male, was convinced by his family to have a physical exam and OGTT*. Marvin is relatively physically inactive, is in the overweight category, and has elevated blood pressure. His only complaint is waking up during the night to urinate. Upon arrival at the clinic on Tuesday morning, Marvin provides a specimen for urinalysis, which is tested within one hour. The UA result is within normal limits (WNL) for all analytes. The phlebotomist draws a fasting blood glucose sample, then Marvin is instructed to drink the 75-g glucose load. After two hours, another blood sample is drawn and sent to the lab. These are Marvin’s results: Fasting Glucose: 124 mg/dL 2-Hour OGTT: 213 mg/dL On Friday afternoon, Marvin returns after lunch for follow-up testing, and his physician receives this result: HbA1c: 6.8% Based on the patient history and lab values, what is Marvin’s diagnosis? *The OGTT is not used routinely for diagnosis of diabetes in non-pregnant adults because it is inconvenient for patients; however, this question is included for learning purposes. Group of answer choices normal results, supported by the normal urinalysis prediabetes type 1 diabetes mellitus type 2 diabetes mellitus unable to determine since the HbA1c result was not performed on a fasting sample