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Type 2 Diabetes

The A1C Test: How It Helps Manage and Treat Diabetes

Brittany DoohanSanjai Sinha, MD
Written by Brittany Doohan | Reviewed by Sanjai Sinha, MD
Updated on May 14, 2025
Featuring Sonal Chaudhry, MD, Sandra Arévalo, RDN, Minisha Sood, MD, Paul Knoepflmacher, MDReviewed by Sanjai Sinha, MD | May 14, 2025

If you have diabetes, checking your blood sugar at home may be as much a part of your daily routine as brushing your teeth or checking the weather forecast. Because the A1C test is not part of your daily habits, you may be less familiar with your number, or why it matters. But understanding the value of the A1C test (and aiming for a healthy number) is critical for optimal diabetes control.

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Brittany Doohan
Written by:
Brittany Doohan
Brittany Doohan was the Content Director at HealthiNation and is currently the Editorial Director at Medscape. Through her work with Medscape, she won a Silver Telly Award in May 2022 for "Sleepless Nation: A Public Health Epidemic — Episode 2: A Decade Without a Diagnosis." She has worked in health journalism and video production for more than 8 years, and loves the challenge of explaining complex topics in an easy-to-understand and creative way.
Sanjai Sinha, MD
Reviewed by:
Sanjai Sinha, MD
Sanjai Sinha, MD, is a board-certified physician with over 20 years of experience. He specializes in internal medicine.

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