what is glycosylated hgb

Glycosylated hemoglobin, also known as HbA1c or A1C, is a form of hemoglobin that is chemically linked to glucose. It is used as a key indicator in the diagnosis and management of diabetes. Here’s what you need to know:

• What it measures: The A1C test measures the percentage of your red blood cells that have glucose-coated hemoglobin, reflecting your average blood sugar levels over the past 2-3 months.
• Normal range:
  • Normal: Below 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or above
• Why it’s important: Unlike daily blood sugar tests, which provide a snapshot of your glucose levels at a single point in time, the A1C test gives a broader picture of long-term glucose control.

For more details, you can refer to the CDC's A1C Test page.