What is HbA1c 糖化血色素

HbA1c, also known as glycated hemoglobin or hemoglobin A1c, is a blood test that provides an average measurement of your blood sugar levels over the past two to three months. It reflects the percentage of hemoglobin, a protein in red blood cells that carries oxygen, that is coated with sugar (glucose).

( Photo from IG ) 

💢How It Works:

- **Hemoglobin** is the protein in red blood cells that carries oxygen.

- **Glycation** happens when glucose in the blood binds to hemoglobin.

- The more glucose present in the blood, the higher the HbA1c level will be.

💢Importance:

HbA1c is a crucial test for managing diabetes. It gives a long-term view of blood sugar control, unlike daily glucose measurements which can fluctuate. This makes it an important tool for both diagnosing diabetes and monitoring how well it is being managed.

💢Normal and Diabetic Ranges:

Normal : Below 5.7%

Prediabetes : 5.7% to 6.4%

Diabetes : 6.5% or higher

💢Higher HbA1c levels are associated with an increased risk of diabetes-related complications, such as : heart disease , nerve damage, and kidney disease. 

Therefore, keeping HbA1c levels within the target range is crucial for people with diabetes. 

HbA1c，香港稱為"糖化血色素"，是一項血液測試，用於測量過去兩到三個月內的平均血糖水平。它反映了血紅蛋白（紅血球中的一種攜氧蛋白）與糖（葡萄糖）結合的百分比。

 💢其運作原理：

- 血紅蛋白: 是紅血球中的蛋白質，負責攜帶氧氣。

- 糖化: 指的是血液中的葡萄糖與血紅蛋白結合的過程。

- 血液中的葡萄糖越多，HbA1c水平就越高。

💢重要性：

HbA1c是管理糖尿病的關鍵測試。與每日測量的血糖值相比，HbA1c提供了一個更長期的血糖控制狀況，因為每日血糖可能會有波動。因此，它是診斷糖尿病及監測其控制情況的重要工具。

💢正常與糖尿病範圍：

正常：低於5.7%

前期糖尿病：5.7%到6.4%

糖尿病：6.5%或更高

較高的HbA1c水平與糖尿病併發症（如心臟病、神經損傷和腎臟病）的風險增加有關。

因此，對於糖尿病患者，將HbA1c水平保持在目標範圍內至關重要。