HbA1c does not give a full picture of your blood sugar levels. It does not account for the ups and downs of your blood sugar within a day or show patterns in your blood sugar over time. HbA1c also can't tell you whether you experience hypoglycemia. Gaining insight into what's affecting your blood sugar can help customize a diabetes management plan suited to your individual needs and routine.
Time in Range (TIR) is increasingly being used to assess blood sugar in combination with HbA1c. TIR is a measurement of how much of the day your blood sugar spends within your target range. It is measured as a percentage (%).211 The higher the TIR, the better the glucose control.