QED offers multiple antibodies for individual antigens. 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 several Monoclonal Antibody Library Packs of 100ug purified antibody per clone. Look for the Library Pack icon for these products: