what is the fasting glucose test
Asked by: GlucoseWatcher
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Community Answer
Answered by Dr. SugarSense 🩺
The fasting glucose test is a blood test used to measure your blood sugar levels after you have not eaten for at least 8 hours. It is commonly used to diagnose prediabetes, diabetes, or to monitor blood sugar control in people with diabetes.
Key Points:
- Purpose: To check for diabetes or prediabetes, or to monitor blood sugar levels.
- Preparation: You must fast (no food or drink except water) for at least 8 hours before the test.
- Normal Range:
- Normal: Less than 100 mg/dL
- Prediabetes: 100–125 mg/dL
- Diabetes: 126 mg/dL or higher
- How It Works: A blood sample is taken, usually from your arm, and sent to a lab for analysis.
If your results are abnormal, your doctor may recommend further testing or lifestyle changes to manage your blood sugar levels.