24/10/2025
HbA1c Test:
1. Objective:
The objective of the test was to measure the percentage of glycated hemoglobin (HbA1c) in the blood to evaluate long-term blood glucose control in diabetic patients.
2. Principle:
The test was based on the principle that glucose in the blood combined with hemoglobin to form glycated hemoglobin (HbA1c). The amount of HbA1c formed was directly proportional to the average blood glucose level over the past 2 to 3 months. Measuring HbA1c helped in assessing long-term glucose control.
3. Materials:
• Patient’s whole blood sample (EDTA tube)
• Test reagents or HbA1c analyzer kit
• Pipettes
• Centrifuge machine (if required)
• HbA1c analyzer or spectrophotometer
4. Procedure (Microscopic / Biochemical):
1. A venous blood sample was collected in an EDTA tube.
2. The sample was mixed gently to prevent clotting.
3. The blood was processed according to the test method (chemical, chromatographic, or immunoassay).
4. The HbA1c percentage was measured by an HbA1c analyzer or spectrophotometer.
5. The obtained reading was compared with normal reference values.
5. Result:
The result was expressed as a percentage (%) of HbA1c in total hemoglobin.
• Normal: Below 5.7%
• Prediabetes: 5.7% – 6.4%
• Diabetes: 6.5% or higher
Higher HbA1c levels indicated poor long-term glucose control.
6. Uses:
• It was used to diagnose and monitor diabetes mellitus.
• It helped to check how well a patient’s blood sugar was controlled over time.
• It guided doctors in adjusting diabetes treatment.
• It was useful in preventing diabetes-related complications.
7. Consultation:
If the HbA1c level was high, the patient was advised to consult a physician or diabetologist. The doctor suggested changes in diet, exercise, medication, and regular monitoring of blood glucose levels.
