Rat BNP ELISA Kit is a competitive ELISA kit for use with Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids. This assay has high sensitivity and excellent specificity for detection of BNP (BNP). No significant cross-reactivity or interference between BNP (BNP) and analogues was observed. Please note that this kit is also available as a CLIA Kit. Quantitative Colorimetric Competitive ELISA. Sample Types: serum, plasma, tissue homogenates, cell lysates, cell culture supernatants and other biological fluids. Range: 4.94 pg/ml - 400 pg/ml. Sensitivity: < 1.77 pg/ml