Community Answer

Answered by Dr. Emily Carter, MD

Blood glucose levels are used to diagnose diabetes. The following ranges are commonly used:

  • Normal: Fasting blood glucose level below 100 mg/dL.
  • Prediabetes: Fasting blood glucose level between 100 mg/dL and 125 mg/dL.
  • Diabetes: Fasting blood glucose level of 126 mg/dL or higher on two separate tests.

Additionally, an A1C test can also diagnose diabetes:

  • Normal: A1C below 5.7%.
  • Prediabetes: A1C between 5.7% and 6.4%.
  • Diabetes: A1C of 6.5% or higher.

If you suspect you have diabetes, consult a healthcare professional for accurate diagnosis and management.

Last updated: 1/12/2025

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