1. What is A1C?

A1C (hemoglobin A1C) is a blood test that measures your average blood sugar levels over the past 2-3 months. It's an important indicator of long-term glucose control and is used to diagnose and monitor diabetes.

2. How is A1C Calculated from Blood Sample?

The calculator uses the following formula to estimate A1C from average glucose levels:

Where:

• \( A1C \) — Glycated hemoglobin percentage
• \( eAG \) — Estimated Average Glucose in mg/dL

Explanation: This formula provides a linear relationship between average glucose levels and the percentage of hemoglobin that has glucose attached to it.

3. Importance of A1C Measurement

Details: A1C reflects long-term glucose control, unlike daily blood sugar tests that show momentary levels. It's crucial for diabetes management and assessing treatment effectiveness.

4. Using the Calculator

Tips: Enter your average glucose level in mg/dL. The value should be based on multiple glucose measurements over time for accurate A1C estimation.

5. Frequently Asked Questions (FAQ)

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

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

Q3: How often should A1C be tested?
A: Typically every 3-6 months for people with diabetes, or as recommended by your healthcare provider.

Q4: Can A1C be inaccurate?
A: Yes, conditions like anemia or recent blood loss can affect results. Always consult your doctor about your numbers.

Q5: What's the relationship between A1C and eAG?
A: eAG is a calculated average glucose that corresponds to your A1C level, helping translate A1C into more familiar glucose units.