Glycosylated Hemoglobin (HbA1c)

 Glycosylated hemoglobin is blood glucose bound to hemoglobin. Hemoglobin A₁C (glycosylated hemoglobin A; HbA1c) is a reflection of how well blood glucose levels have been controlled for the past 3 to 4 months. Hyperglycemia in clients with diabetes is usually a cause of an increase in the HbA1c.

Normal and Abnormal Lab Values for Glycosylated Hemoglobin

  • 7% or lower (good control of diabetes)
  • 7% to 8% (fair control of diabetes)
  • Higher than 8 % (poor control of diabetes)

Nursing Consideration

  • Fasting is not required before the test.