1. What is A1C?

A1C (glycated hemoglobin) is a blood test that measures your average blood sugar levels over the past 2-3 months. It's expressed as a percentage and is commonly used to diagnose and monitor diabetes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( eAG \) — Estimated Average Glucose (mg/dL)
• 46.7 and 28.7 — Conversion constants

Explanation: The formula converts average glucose measurements (eAG) to the A1C percentage that would be expected based on that average glucose level.

3. Importance of A1C Measurement

Details: A1C provides a longer-term view of blood sugar control than daily glucose tests. It's used for diabetes diagnosis (A1C ≥6.5%) and monitoring treatment effectiveness.

4. Using the Calculator

Tips: Enter your average glucose level in mg/dL. The value should be greater than 0. For best results, use an average from multiple glucose readings over time.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between A1C and daily glucose tests?
A: A1C reflects average blood sugar over 2-3 months, while daily tests show your current level. Both are important for diabetes management.

Q2: What are normal A1C values?
A: Normal is below 5.7%, 5.7-6.4% indicates prediabetes, and 6.5% or higher suggests diabetes.

Q3: How often should A1C be tested?
A: People with diabetes typically test every 3-6 months. Those with prediabetes might test annually.

Q4: Can A1C be inaccurate?
A: Yes, conditions like anemia or recent blood loss can affect results. Some ethnic groups may also have naturally higher or lower A1C.

Q5: What's the relationship between A1C and average glucose?
A: The calculator shows this relationship. For example, A1C of 7% ≈ eAG of 154 mg/dL.