C肽

该检测用于测定血液或尿液样本中C肽的水平。胰岛素原是无活性的胰岛素前体，由胰腺中的β细胞合成。胰岛素原裂解产生胰岛素和C肽，并储存于β细胞。胰岛素在需要时被释放到血液中，并转运葡萄糖进入细胞（用于产生能源），同时释放等量的C肽，使C肽成为胰岛素分泌相关的有价值的标记物。

        C肽可用于评估内源性胰岛素（机体产生的胰岛素）的分泌，以区别于外源性胰岛素（非机体产生的胰岛素，因此不产生C肽）。

自肘静脉采集血液样本。如果需要24小时尿样，您将被要求保存24小时内的所有尿液。

检测前可能需要空腹，请向您的医生咨询。

疾病: 糖尿病, 肾病, 肝病, 胰岛素抵抗

American Diabetes Association

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