how long to fast for diabetes test
Asked by: JohnDoe
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Community Answer
Answered by Dr. Emily Carter, MD
For most diabetes tests, such as the fasting plasma glucose (FPG) 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. Here’s a quick guide:
- Fasting Plasma Glucose (FPG) Test: Fast for 8-12 hours.
- Oral Glucose Tolerance Test (OGTT): Fast for 8-12 hours, then drink a glucose solution, and have blood drawn at intervals.
- A1C Test: No fasting required.
Always follow your healthcare provider's instructions for accurate results.