Proteintech Group Inc

Proteintech Group is a biotechnology company specializing in high-quality antibodies and protein research reagents for life sciences and pharmaceutical research. Founded in 2001 by scientists and headquartered in Rosemont, Illinois, the company manufactures a comprehensive catalog of antibodies, immunoassays, recombinant proteins, and nanobody-based reagents. Proteintech offers antibodies against 12,000+ human targets, 100+ sandwich ELISA kits, 4,000+ recombinant fusion proteins, and cGMP-grade cytokines and growth factors. Products include primary and secondary antibodies (monoclonal, polyclonal, and recombinant), conjugated antibodies for immunofluorescence and flow cytometry, immunohistochemistry kits, and magnetic cell separation kits. The company emphasizes in-house manufacturing, reproducibility, and a "scientists for scientists" approach, with products cited in over 20,000 peer-reviewed publications. Custom antibody services, polyclonal antibody production, and GMP-grade proteins support drug development and cell/gene therapy applications. Recently launched Able AI—a product recommendation tool—to accelerate scientific discovery.