what is fasting blood glucose level

Fasting blood glucose (FBG) level is a measure of your blood sugar after you have not eaten for at least 8 hours. It is commonly used to diagnose prediabetes and diabetes. Here are the standard ranges:

FBG Level (mg/dL) Diagnosis

Below 100 Normal
100–125 Prediabetes
126 or higher Diabetes

• Normal: Below 100 mg/dL indicates healthy blood sugar regulation.
• Prediabetes: 100–125 mg/dL suggests an increased risk of developing diabetes.
• Diabetes: 126 mg/dL or higher on two separate tests indicates diabetes.

Fasting blood glucose tests are often performed in the morning before breakfast. If your levels are abnormal, your healthcare provider may recommend further testing or lifestyle changes.