1. What is the A1C Calculator?

The A1C calculator estimates hemoglobin A1C (glycated hemoglobin) from average blood glucose levels (eAG). A1C reflects average blood glucose levels over the past 2-3 months and is a key marker for diabetes management.

2. How Does the Calculator Work?

The calculator uses the ADAG (A1C-Derived Average Glucose) equation:

Where:

• \( A1C \) — Glycated hemoglobin (percentage)
• \( eAG \) — Estimated average glucose (mg/dL)

Explanation: The equation converts average glucose levels into an A1C percentage, which represents the percentage of hemoglobin that is glycated.

3. Importance of A1C Measurement

Details: A1C is crucial for diabetes diagnosis and monitoring. It provides a long-term view of blood glucose control and correlates with diabetes complications risk.

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 results.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal A1C level?
A: Normal is below 5.7%. 5.7%-6.4% indicates prediabetes, and 6.5% or higher suggests diabetes.

Q2: How often should A1C be tested?
A: For diabetes management, typically every 3-6 months depending on control and treatment plan.

Q3: Can A1C be inaccurate in some cases?
A: Yes, conditions affecting hemoglobin (anemia, hemoglobinopathies) or red cell turnover can affect A1C accuracy.

Q4: What's the difference between A1C and eAG?
A: A1C is a percentage reflecting long-term control, while eAG is in mg/dL and represents an estimated average glucose level.

Q5: Should this replace regular blood glucose monitoring?
A: No, A1C complements but doesn't replace daily glucose monitoring which shows short-term fluctuations.