Do you have to fast for hemoglobin A1C?

No, you do not need to fast before taking a hemoglobin A1C test. Unlike other blood sugar tests, such as the fasting plasma glucose test, the A1C test measures your average blood sugar levels over the past 2-3 months and does not require fasting. However, your doctor may order additional tests (e.g., cholesterol) that might require fasting, so always confirm with your healthcare provider.