A 44 year old obese patient with findings: FBS 6mmol/l, OGTT 10mmol/l, 2 hours after 75 g of glucose. What is the most likely diagnosis?

The key is A. Impaired glucose tolerance. [The World Health Organization (WHO) criteria for

impaired glucose tolerance (IGT) are an FPG of less than 126 mg/dL (7 mmol/L), if measured, and a

venous plasma glucose of 140 mg/dL to just below 200 mg/dL (≥7.8 to <11.1mmol/L) 2 hours after a 75-

g glucose load with one intervening plasma glucose value at or above 200 mg/dL].