Impaired Fasting Glucose (IFG) is measured by a fasting blood glucose test. If your fasting blood sugar levels are between 100 to 125 mg/dL, it is a sign for impaired fasting glucose, which is considered pre-diabetes.
Sources:
- Mayo Clinic. Prediabetes. https://www.mayoclinic.org/diseases-conditions/prediabetes/diagnosis-treatment/drc-20355284 (accessed 5. August 2020)