Which is more accurate A1C or fasting glucose?

Both the A1C test and fasting glucose test are important for diagnosing and managing diabetes, but they measure different aspects of blood sugar control:

• A1C Test: Measures your average blood sugar levels over the past 2-3 months. It reflects long-term glucose control and is less affected by daily fluctuations.
• Fasting Glucose Test: Measures your blood sugar level at a single point in time after fasting for at least 8 hours. It provides a snapshot of your current glucose levels.

Which is more accurate?

• A1C is generally more reliable for long-term glucose monitoring and diagnosing diabetes or prediabetes.
• Fasting Glucose is useful for detecting immediate blood sugar issues but can be influenced by recent meals, stress, or illness.

When to use each:

• A1C: Preferred for diagnosing diabetes and monitoring long-term glucose control.
• Fasting Glucose: Often used alongside A1C for a comprehensive assessment.

Both tests have their strengths, and your doctor may recommend using them together for a complete picture of your glucose levels.