does hgb a1c need to be fasting

No, the Hemoglobin A1C (HbA1c) test does not require fasting. Unlike other blood sugar tests, such as the fasting plasma glucose test, the HbA1c test measures your average blood sugar levels over the past 2-3 months. This makes it a convenient option for diagnosing and monitoring diabetes or prediabetes.

However, your doctor may order additional tests (e.g., cholesterol) alongside the HbA1c test that might require fasting. Always confirm with your healthcare provider before the test.