Principle of Assay
Chicken Fibronectin ELISA Kit (A334893) is a 4 hour sandwich Enzyme-Linked Immunosorbent Assay (sELISA) designed for the in vitro quantitative determination of chicken Fibronectin in serum, plasma, cell culture supernatant, cell or tissue lysate, and other biological fluids. A 96-well microtiter plate has been pre-coated with an antibody specific for Fibronectin. Standards and samples are added to the wells, where Fibronectin binds to the immobilized capture antibody. Following incubation, unbound components are removed by washing and a biotinylated detection antibody specific for Fibronectin is added to the wells. The detection antibody binds the captured Fibronectin to form an antibody-antigen-antibody sandwich complex. After further incubation and washing, HRP-Streptavidin conjugate is added to the wells. TMB substrate solution is then added to visualize the HRP enzymatic reaction. This produces a blue-coloured product that changes to yellow following addition of acidic stop solution. The intensity of the yellow colour is directly proportional to the amount of Fibronectin captured in each well. The concentration of Fibronectin is calculated by reading the absorbance at 450 nm and comparing the values with the standard curve.