how long do you fast for diabetes test
Asked by: CuriousPatient123
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Community Answer
Answered by Dr. HealthMonitor 🩺
For a fasting blood glucose test, which is commonly used to diagnose diabetes or prediabetes, you typically need to fast for 8 to 12 hours before the test. This means no food or drink (except water) during this period. Fasting ensures that your blood sugar levels are not influenced by recent meals, providing a more accurate measurement.
However, for an A1C test, fasting is not required because it measures your average blood sugar levels over the past 2-3 months, regardless of recent meals.