Medicine Diabetes mellitus diagnosed when? A Fasting blood glucose is 100 and post prandial 140 B Fasting blood sugar 125 and 2 hour postprandial blood sugar is 199 C Insulin level D Hb A1c > 6.5% 💡 Explanation Diabetes mellitus diagnosed when? ✓ Correct Answer: D. Hb A1c > 6.5%