Rat 4-1BB/TNFRSF9/CD137 PharmaGenie ELISA Kit (SBRS1603)

Built by Assay Genie for immunology and cancer immunotherapy research, this rat 4-1BB (TNFRSF9/CD137) quantitative immunoassay measures a T cell costimulatory receptor that is also shed as a soluble biomarker in tumor and inflammatory disease models. The kit is supplied as a 96-assay format with a pre-coated microplate, recombinant rat 4-1BB calibrator, detection antibody, and substrate reagents for absorbance-based quantification. Researchers apply it to rat cell culture supernatant samples, rat plasma specimens, and rat serum specimens to monitor receptor shedding during T cell activation, track changes in tumor-bearing animals, and profile immune responses in colitis, arthritis, and graft-versus-host disease studies. The protocol runs on standard ELISA plate workflows and is intended for research use only in laboratory settings.