Hemoglobin A1c

Endocrine

Normal Reference Ranges

Adult

4.0 - 5.6 %

Pediatric

4.0 - 5.6 %

Clinical Significance

Reflects average blood glucose over the past 2-3 months. Used for diagnosing and monitoring the management of Diabetes Mellitus.

Causes of High

  • Poorly controlled Diabetes
  • Newly diagnosed Diabetes (≥ 6.5%)

Causes of Low

  • Hemolytic anemia
  • Recent blood transfusion
  • Chronic blood loss