Human Secretin 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 Secretin. No significant cross-reactivity or interference between Secretin and analogues was observed. Please note that this kit is also available as a CLIA Kit. Quantitative Colorimetric Competitive ELISA. Sample Types: serum, plasma, cell culture supernatants, tissue homogenates, cell lysates and other biological fluids. Range: 0.617 ng/ml - 50 ng/ml. Sensitivity: < 0.24 ng/ml