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The A1C test, also known as glycated hemoglobin test, is a crucial blood test for monitoring long-term blood sugar levels in humans. It provides an average measure of glucose in the blood over the previous two to three months, offering insights into a person’s diabetes management and risk of complications.
Hemoglobin is a protein in red blood cells that carries oxygen.
Glucose in the bloodstream can attach to hemoglobin, forming glycated hemoglobin.
The A1C test measures the percentage of hemoglobin molecules that have glucose attached.
Higher A1C percentages indicate higher average blood glucose levels over time.
Normal: Less than 5.7%
Prediabetes: 5.7% – 6.4%
Diabetes: 6.5% or higher
Diabetes Diagnosis: Confirms long-term blood sugar levels, complementing fasting glucose tests.
Monitoring Diabetes: Helps doctors evaluate if treatment plans (diet, exercise, or medication) are effective.
Predicting Complications: Higher A1C levels correlate with increased risk of heart disease, kidney damage, and vision problems.
Total cholesterol: Measures blood lipids, unrelated to A1C.
Fructosamine: Measures blood sugar over the past 2–3 weeks, not 3 months.
Muscle strength: Not related to blood glucose or hemoglobin.
A1C = glycated hemoglobin test
Measures average blood sugar over 2–3 months
Used for diabetes diagnosis and monitoring
Normal range: <5.7%, Diabetes: ≥6.5%
👉 Correct Answer: Option 2 – Blood sugar level for three months
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