Medicine Criteria for diagnosis of diabetes mellitus is A Fasting plasma glucose > 100 mg/dl B 2h plasma glucose after a glucose challenge >=140 mg/d C 2h plasma glucose after a glucose challenge >=180 mg/dl D Hemoglobin A1c (HbA1c) >= 6.5% 💡 Explanation Criteria for diagnosis of diabetes mellitus is ✓ Correct Answer: D. Hemoglobin A1c (HbA1c) >= 6.5%