The paired antibody EIA products are not diagnostic kits or Analyte Specific Reagents. They consist of paired capture and detecting antibodies that have been titrated and optimized for use in "in-house" or "home-brew" sandwich style ELISA assays in a research setting. The product as provided contains sufficient capture and detecting antibodies for five full 96-well microplates and contains a detailed protocol sheet containing directions for use, recipes for solutions and sources for additional materials required. These products are intended for the experienced user and provide an economical alternative to more expensive pre-manufactured kits.