Guidelines for Glucose Monitoring in Patients with Elevated Blood Sugar Levels

HbA1C Monitoring Frequency

The American Diabetes Association recommends HbA1C should be measured routinely every 3 months until acceptable targets are achieved, then no less than every 6 months 1
For patients who have stable blood sugar control, semiannual testing is appropriate; for those whose therapy has changed or who are not meeting blood sugar goals, quarterly testing is recommended 2

SMBG is an integral component of effective therapy, particularly for patients taking insulin 2
For patients with elevated blood sugar levels, structured SMBG should be performed to evaluate individual response to therapy and assess whether blood sugar targets are being safely achieved 2
The frequency and timing of SMBG should be dictated by the patient's specific needs and goals 3

CGM is rapidly improving diabetes management and provides additional metrics beyond HbA1C 2
Time in range (TIR) is a useful metric that correlates well with HbA1C and should target >70% of readings between a normal and slightly elevated blood sugar range 2
For patients with elevated blood sugar levels, CGM can help identify patterns of high and low blood sugar that may not be evident with SMBG alone 2

A reasonable HbA1C goal for many nonpregnant adults is <7% without significant low blood sugar 2
Less stringent HbA1C goals (such as <8%) may be appropriate for patients with a history of severe low blood sugar, limited life expectancy, advanced complications, or extensive comorbid conditions 2

Avoid aggressive blood sugar control in patients at high risk for low blood sugar, particularly older adults 5

Setting overly aggressive targets (HbA1C <6.5%) for patients with multiple comorbidities or at high risk for low blood sugar 4
Failing to adjust targets as patient circumstances change (e.g., development of comorbidities, aging) 4
Overlooking the increased risk of low blood sugar with intensive control, especially in patients with kidney impairment 4
Excessive focus on tight control may lead to treatment burden that outweighs benefits, particularly in older adults 5