DELFIA® Toolbox kits allow you to build your own DELFIA time-resolved fluorescence (TRF) assay using your preferred antibody against the analyte of interest. Painlessly switch your traditional ELISA to one with a wider dynamic range, higher sensitivity, and great signal stability. This kit contains all necessary reagents to perform a sandwiching immunoassay using DELFIA Europium-labeled anti-rabbit IgG antibody for detection.