Table 3

HbA1c testing and time in range outcome

HbA1c testingTime in range outcome
Evaluates single HbA1c levelsEvaluates continuous glucose levels
Compares HbA1c levels 3 months apartMay compare fluctuations for any given amount of time
Does not capture hypoglycemic or hyperglycemic levels occurring in the same dayCaptures all glucose levels for the given time frame and identifies time within a safe range
Less likely to capture impact of acute interventionsLikely to capture impact of acute interventions