KeyTec® Hybridoma Screening Kit is a sandwich-type immunoassay developed using KeyTec® TR-FRET technology. KeyTec® TR-FRET Human Fc Assay is a competitive immunoassay developed using KeyTec® TR-FRET technology. KeyTec® TR-FRET Human IgG Assay is a sandwich-type immunoassay developed using KeyTec® TR-FRET technology.