QED offers multiple antibodies for many different antigens. This increases your chances of finding a monoclonal antibody that will work best in your immunoassay systems. Since different assays have different requirements, we are not always able to tell you which of our antibodies will work best for you. To solve this problem, and to give you an economical way to evaluate all of our antibodies to a given antigen, QED offers Monoclonal Antibody Library Packs which contain 100ug purified antibody per clone. Look for the Library Pack icon in our product pages.