Fasting blood glucose - impaired fasting glucose (prediabetes) range?

• A. 5.6-6.9 mmol/L
• B. <5.6 mmol/L
• C. ≥7.0 mmol/L
• D. 6.0-6.5 mmol/L

Answer: (A)

Impaired fasting glucose defines prediabetes by a fasting plasma glucose level that isn’t normal but isn’t high enough to be diabetes. The commonly used range for this condition is 5.6 to 6.9 mmol/L. Values below 5.6 are considered normal, while a fasting level of 7.0 mmol/L or higher indicates diabetes. A subrange like 6.0–6.5 mmol/L sits inside the prediabetes window, but the standard definition uses the full 5.6–6.9 mmol/L range.