how many hours to fast before diabetes test

For most diabetes tests, such as the fasting blood glucose test, you typically need to fast for 8 to 12 hours before the test. This means no food or drink (except water) during this period. However, the A1C test does not require fasting.

Here’s a quick guide:

Test Type Fasting Required? Fasting Duration

Fasting Blood Glucose Yes 8-12 hours
A1C Test No Not applicable
Oral Glucose Tolerance Test (OGTT) Yes 8-12 hours

Always follow your healthcare provider's instructions for accurate results.