what is a normal range for glucose

The normal range for blood glucose levels varies depending on the type of test and whether you are fasting or not. Here are the general guidelines:

• Fasting Blood Glucose (FBG):

  • Normal: 70–99 mg/dL
  • Prediabetes: 100–125 mg/dL
  • Diabetes: 126 mg/dL or higher

• Postprandial (after meals):

  • Normal: Less than 140 mg/dL
  • Prediabetes: 140–199 mg/dL
  • Diabetes: 200 mg/dL or higher

• Hemoglobin A1C (HbA1c):

  • Normal: Below 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or higher

These ranges are used to diagnose and monitor diabetes and prediabetes. Always consult with a healthcare provider for personalized advice.