Hemoglobin A1c (A1C) estimates your average blood sugar over about 3 months. It helps guide diabetes goals and treatment changes. A1C has been a cornerstone of diabetes management since the 1990s. The ...
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What is the A1C test?

What to expect when undergoing this test ...
The A1C test has long been considered the gold standard for measuring diabetes management success. But now, continuous glucose monitoring (CGM) technology provides a new measurement option for people ...
You’re not imagining it: The postmeal lull is real. Many people feel fatigued, foggy, or irritable after meals, even when lab tests show a normal A1C level. A1C measures average blood sugar levels ...
Should A1c remain the gold standard for routine monitoring of glucose control in people with diabetes, or is it time to shift to “time in range” and other metrics of continuous glucose monitoring (CGM ...