BioReagent 级 ，适用于对基线干扰要求严格的色谱和分析工作流程。
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胃泌素释放肽前体(ProGRP)是胃泌素释放肽生成前的前体结构，在血中较稳定，主要存在于胃肠道、呼吸道、中枢神经系统。它和神经元特异性烯醇化酶是与神经内分泌源组织和肿瘤有关的两种分子。胃泌素释放肽前体水平升高见于多种神经内分泌源肿瘤，包括：小细胞肺癌、类癌、具有神经内分泌功能的未分化大细胞肺癌、甲状腺髓样癌、其他神经内分泌恶性肿瘤以及具有神经内分泌功能的不依赖雄激素的前列腺癌亚组。 本试剂盒采用双抗体夹心法酶联免疫吸附试验（ELISA）。往预先包被有人胃泌素释放肽前体(ProGRP)捕获抗体的微孔中，依次加入样本、标准品、生物素标记的检测抗体，HRP酶结合物，中间经过温育和洗涤，用底物TMB显色，TMB在过氧化物酶(HRP)的催化下转化成蓝色，并在酸的作用下转化成最终的黄色。颜色的深浅和样本中的人胃泌素释放肽前体(ProGRP)呈正相关。用酶标仪在450nm 波长下测定吸光度（OD值），计算样本浓度。
This kit employs the sandwich enzyme-linked immunosorbent assay (ELISA) principle. Microplate wells are pre-coated with a capture antibody specific to Human ProGRP. Following this, the sample, standards, a biotin-conjugated detection antibody, and an HRP (horseradish peroxidase)-labeled conjugate are added sequentially to the wells. The procedure involves incubation and wash steps between each addition. For detection, TMB substrate is used. TMB yields a blue color in the presence of the peroxidase activity of HRP. The reaction is then stopped with an acid solution, which converts the blue color to a final yellow color. The intensity of the yellow color is directly proportional to the concentration of Human ProGRP present in the sample. The optical density (OD) is measured at a wavelength of 450 nm using a microplate reader. Finally, the concentration of the target analyte in the sample is calculated based on the standard curve generated from the standards.
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