Principle of Assay
Human/Mouse/Rat NF-L ELISA Kit (A334822) employs a one-step sandwich enzyme-linked immunosorbent assay (ELISA) for the quantitative determination of human, mouse, rat NF-L in serum, plasma, and cell culture supernatant. A 96-well microtiter plate is provided pre-coated with an antibody specific for NF-L. Standards and test samples are added to the wells, allowing NF-L to bind to the immobilized capture antibody. A prepared antibody mixture is added and incubated to form antibody–antigen complexes. After incubation, unbound material is removed by washing, and TMB substrate is added to develop colour through an HRP-catalysed reaction. The reaction is stopped with acidic stop solution, producing a yellow endpoint signal. The intensity of the colour is proportional to the amount of NF-L captured in each well. The concentration of NF-L is determined by measuring absorbance at 450 nm and interpolating from the standard curve.