Profile: Koma Biotech manufactures & provides reagents and tools for life science research. Our products include electrophoresis systems & pre cast gels, PCR amplification reagents, nucleic acid purification kits, DNA methylation detection kit, recombinant proteins, monoclonal & polyclonal antibodies, ELISA kits for cytokines, immunoglobulins or viral antigens. We also provide custom antibody production service. Our human IL 21 pink one ELISA kit contains all components required for the quantitative measurement of natural and/or recombinant human IL 21 in serum or other biological samples in a sandwich ELISA format within the range of 46 to 3000 pg/ml.