what blood test shows prediabetes

The A1C test is commonly used to diagnose prediabetes. Here’s what you need to know:

• What it measures: The A1C test measures your average blood sugar levels over the past 2-3 months.
• Diagnostic ranges:
  • Normal: Below 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or above

Other tests that may be used include:

• Fasting Plasma Glucose (FPG) Test: Measures blood sugar after fasting for at least 8 hours.
  • Prediabetes range: 100-125 mg/dL
• Oral Glucose Tolerance Test (OGTT): Measures blood sugar before and after drinking a glucose-rich drink.
  • Prediabetes range: 140-199 mg/dL after 2 hours

If your results indicate prediabetes, consult your doctor for lifestyle changes or further testing.