本试剂盒应用双抗体夹心酶标免疫分析法测定标本中CCK-8水平。用纯化的抗体包被微孔板，制成固相抗体，往包被单抗的微孔中依次加入CCK-8抗原、生物素化的抗人CCK-8抗体、HRP标记的亲和素，经过彻底洗涤后用底物TMB显色。TMB在过氧化物酶的催化下转化成蓝色，并在酸的作用下转化成最终的黄色。颜色的深浅和样品中的CCK-8呈正相关。用酶标仪在450nm波长下测定吸光度（OD值），计算样品浓度。
Intended use
This immunoassay kit allows for the specific measurement of human CCK-8 concentrations in cell culture supernates, serum, and plasma.
Introduction
Cholecystokinin octapeptide (CCK-8) exists in the gut in high concentrations and is believed to be the most prevalent form of cholecystokinin.
Test principle
This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal
antibody specific for CCK-8 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any CCK-8 present is bound by the immobilized antibody. An
enzyme-linked monoclonal antibody specific for CCK-8 is added to the wells. Following a wash to remove any unbound antibody-enzyme reagent, a substrate solution is added to the wells
and color develops in proportion to the amount of CCK-8 bound in the initial step. The color
development is stopped and the intensity of the color is measured.
