+A1c, or glycated hemoglobin, is a blood test revealing a person's average [blood sugar](/wiki/blood_sugar) levels over the past few months. It acts as a long-term mirror, crucial for diagnosing [diabetes](/wiki/diabetes) and guiding its management.
+## See also
+- [Hemoglobin](/wiki/hemoglobin)
+- [Glucose](/wiki/glucose)
+- [Insulin](/wiki/insulin)
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