The procedure of combining immunoprecipitation (IP) and SDS-PAGE/Western blot can be a powerful tool to assess the amount and size of an antibody-reactive antigen present in a complex protein mixture. Rockland’s immunoprecipitation (IP) kits focus on epitope tags used as markers of protein localization, purification of recombinant proteins, tag detection, and signal amplification. Combined with the power of the TrueBlot® product line, our IP kits provide unparalleled clarity and reproducibility for functional studies of immunoprecipitated proteins/complexes and SDS-PAGE or western blot analysis of immunoprecipitated proteins and complexes.