本试剂盒应用双抗体夹心酶标免疫分析法测定标本中HBsAg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HBsAg抗原、生物素化的抗小鼠HBsAg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HBsAg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 mouse HBsAg concentrations in serum and plasma.
Introduction
Hepatitis B is an infection of the liver caused by the hepatitis B virus. Screening for HBsAg is recommended for all donors, pregnant women and those individuals who at high risk. Presence of this marker is conclusive proof of HBV infection.
Test principle
This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal antibody specific for HBsAg has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any HBsAg present is bound by the immobilized antibody. An enzyme-linked monoclonal antibody specific for HBsAg 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 HBsAg bound in the initial step. The color development is stopped and the intensity of the color is measured.
