Determining the Class and Subclass of Monoclonal Antibodies Using Antibody Capture on Anti-Immunoglobulin Antibody-Coated Plates

By definition, a monoclonal antibody should only be of a single class or subclass. Each class of antibody is associated with specific functions, and it can be useful to know the class/subclass of the monoclonal antibody produced by a specific hybridoma. In this protocol, class/subclass-specific antibodies are used to capture the monoclonal antibody from hybridoma supernatant. If the antibody is clonal, it will only be bound by one anti-heavy-chain capture antibody and one anti-light-chain antibody. No antigen is required.