Human S100 Calcium Binding Protein A9 (S100A9) ELISA Kit

This quantitative immunoassay from Assay Genie targets the human S100A9 calcium-binding protein, an inflammation-associated member of the S100 family that pairs with S100A8 to form the calprotectin heterodimer (MRP8/MRP14). Because S100A9 is released abundantly by activated neutrophils and monocytes, the kit supports research into acute and chronic inflammatory processes, including studies of rheumatoid arthritis, inflammatory bowel disease, sepsis, and cardiovascular pathology, as well as investigations into innate immune signaling, granulocyte biology, and the regulation of myeloid cell differentiation.

The assay quantifies S100A9 across multiple human specimen types, including serum- or plasma-derived fractions, tissue homogenates, cell lysates, and cell culture supernatants. Researchers use the kit to track neutrophilic activation, monitor biomarker changes in longitudinal studies, and assess recombinant protein expression in in vitro transfection models. The microplate configuration supports medium-throughput screening of patient cohorts, animal model tissues, and cell-based assays.

Each kit is supplied with the reagents needed to run a standard curve and experimental samples on a single plate. Cold storage preserves reagent activity, and the absorbance-based readout produces data compatible with standard microplate readers commonly available in immunology, cell biology, and biochemistry laboratories.