Human Cathepsin A ELISA Kit is a sandwich 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 Cathepsin A (CTSA). No significant cross-reactivity or interference between Cathepsin A (CTSA) and analogues was observed. Please note that this kit is also available as a CLIA Kit. Quantitative Colorimetric Sandwich ELISA. Sample Types: serum, plasma, tissue homogenates, cell lysates, cell culture supernatants and other biological fluids. Range: 62.5 pg/ml - 4000 pg/ml. Sensitivity: < 25.2 pg/ml