what is a fasting blood glucose

Fasting blood glucose (FBG) is a test that measures 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:

• Normal Range: 70–99 mg/dL
• Prediabetes Range: 100–125 mg/dL
• Diabetes Range: 126 mg/dL or higher on two separate tests

Why is it important?

• Diagnosis: Helps identify prediabetes or diabetes.
• Monitoring: Tracks how well your diabetes management plan is working.
• Risk Assessment: High fasting glucose levels can indicate an increased risk for diabetes-related complications.

How is it done?

• You will need to fast overnight (8–12 hours).
• A blood sample is taken, usually from a vein in your arm.
• Results are typically available quickly.

If your fasting blood glucose levels are consistently high, consult your healthcare provider for further evaluation and management.