what is the a1c blood test

The A1C blood test, also known as the hemoglobin A1C or HbA1c test, is a common blood test used to diagnose and monitor diabetes and prediabetes. Here’s what you need to know:

• What it measures: The A1C test measures your average blood sugar (glucose) levels over the past 2 to 3 months. It does this by assessing the percentage of hemoglobin (a protein in red blood cells) that has glucose attached to it.
• Why it’s important: It provides a long-term view of blood sugar control, unlike daily glucose tests, which only show a snapshot of your levels at a single point in time.
• Diagnostic ranges:
  • Normal: Below 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or higher
• How it’s done: A blood sample is taken from your arm or finger, and no fasting is required.

This test is a key tool for managing diabetes and preventing complications. For more details, consult your healthcare provider.