1. What is HbA1c?

HbA1c (Hemoglobin A1c) is a form of hemoglobin that is chemically linked to sugar. It provides a three-month average of blood glucose levels and is a crucial marker for long-term glucose control in diabetes management.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( eAG \) — Estimated Average Glucose (mg/dL)
• 46.7 and 28.7 — Constants derived from regression analysis

Explanation: This formula converts average blood glucose levels measured in mg/dL to the HbA1c percentage used to monitor long-term glucose control.

3. Importance of HbA1c Measurement

Details: HbA1c testing is essential for diabetes diagnosis and management. It reflects average blood glucose levels over approximately 3 months and helps assess treatment effectiveness and risk of complications.

4. Using the Calculator

Tips: Enter your average glucose level in mg/dL. The value must be a positive number. The calculator will provide the corresponding HbA1c percentage.

5. Frequently Asked Questions (FAQ)

Q1: How often should HbA1c be tested?
A: For people with diabetes, HbA1c should typically be tested every 3-6 months, depending on treatment goals and stability of glucose control.

Q2: What are normal HbA1c values?
A: Normal HbA1c is below 5.7%. Prediabetes ranges from 5.7% to 6.4%, and diabetes is diagnosed at 6.5% or higher.

Q3: Are there limitations to this conversion?
A: The formula provides an estimated conversion. Individual variations in hemoglobin characteristics may affect accuracy. Always consult with a healthcare provider for clinical interpretation.

Q4: Why use average glucose instead of single measurements?
A: Average glucose provides a more comprehensive picture of glucose control over time, reducing the impact of daily fluctuations and occasional highs or lows.

Q5: Can this calculator be used for diagnosis?
A: No, this calculator provides estimates only. Formal diabetes diagnosis should always be made by a healthcare professional using standardized laboratory tests.