What type of elisa is commonly used to detect antibody?

The most commonly used type of ELISA to detect antibodies is the indirect ELISA. In this method, the antigen is coated onto a microplate, and a sample containing the antibodies is added. If antibodies specific to the antigen are present, they will bind to it. A secondary enzyme-linked antibody is then added, which binds to the primary antibodies, allowing for detection through a colorimetric or luminescent reaction.