Cell Applications, Inc. offers a variety of sandwich ELISA Kits, for the detection and measurement of cytokines, growth factors, and other biological active proteins from multiple matrices, including: cell culture supernatants, tissue homogenates, sera/plasma, and other body fluids. ELISA Kits are extensively validated for high specificity, tested for lot-to-lot reproducibility, and have a sensitivity and accuracy that rivals that of bioassays. These Human ELISA Kits, Mouse ELISA Kits, and Rat ELISA Kits contain test data and corresponding sample standard for the preparation of a standard detection curve. Each ELISA Kit is ready-to-use and scalable, containing reagents for up to 96 reactions in the 96-well immunoassay plate format.