Glycated haemoglobin (HbA1c) is a blood test that provides information about a person's average blood glucose levels over the past two to three months. Instead of measuring the blood glucose at a specific point in time, like fasting or after a meal, the HbA1c test reflects the average blood sugar level during that extended period.

Unit 4,

Reference: Gilstrap LG, Chernew ME, Nguyen CA, et al. Association Between Clinical Practice Group Adherence to Quality Measures and Adverse Outcomes Among Adult Patients With Diabetes. JAMA Netw Open. 2019;2(8):e199139. Published 2019 Aug 2.