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Answered by Dr. HealthMetrics

Glucose level refers to the concentration of glucose (sugar) in your blood. It is typically measured in milligrams per deciliter (mg/dL) or millimoles per liter (mmol/L). Here are the general ranges for blood glucose levels:

  • Normal fasting glucose level: 70–99 mg/dL (3.9–5.5 mmol/L)
  • Prediabetes (impaired fasting glucose): 100–125 mg/dL (5.6–6.9 mmol/L)
  • Diabetes: 126 mg/dL (7.0 mmol/L) or higher on two separate tests

Glucose levels can be measured using a blood glucose meter, continuous glucose monitor (CGM), or through lab tests like the A1C test, which provides an average blood glucose level over the past 2–3 months.

Last updated: 1/12/2025

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