The KeyTec® TR-FRET Human TNFαassay kit is designed for quantitative measurement of Human TNFα protein in supernatant. It is based on sandwich immunoassay model and utilizes TR-FRET technology, known for its ease of use, homogeneity (no wash), low background, high sensitivity, robustness.
The detection principle is based on TR-FRET technology. A pair of mAb anti-TNFα antibodies, each labeled with KeyTec® TR-FRET Solar Eu and KeyTec® TR-FRET LA, bind to the same antigen Human TNFα protein. This binding brings the donor molecule into proximity with the acceptor molecule. Excitation of the donor will result in the generation of the TR-FRET signal at 665 nm, proportional to the concentration of Human TNFα protein.