how long to fast before diabetes test
Asked by: JohnDoe123
SponsoredAmazon's Choice
NatureBell Xylitol Sweetener, 5lbs | Natural Birch Crystal Source – 1:1 Sugar Substitute
Sweet flavor with no erythritol, low calorie and glycemic impact, sugar free, no aftertaste, and non-GMO—ideal for mindful sugar swaps without compromising taste.
$29.95Prime eligible
Pricing and availability are based on Amazon listings and may change.
Community Answer
Answered by Dr. Emily Carter 🩺
The fasting period required before a diabetes test depends on the type of test being performed:
- Fasting Blood Glucose Test: You typically need to fast for 8-12 hours before this test. Only water is allowed during the fasting period.
- A1C Test: No fasting is required for the A1C test, as it measures your average blood sugar levels over the past 2-3 months.
- Oral Glucose Tolerance Test (OGTT): You must fast for 8 hours before the test, and then your blood sugar is tested again 2 hours after drinking a glucose solution.
Always follow your healthcare provider's instructions for accurate results.