Quantitative colorimetric assay. This kit is for the detection of natural and recombinant rat CD80. No significant cross-reactivity or interference between CD80 and analogs was observed. Sample types: cell culture supernatants, serum. Range: 62.5 - 4000 pg/ml. Precision: Intra-Assay: CV%<6.8% Inter-Assay: CV%<7.4%.