These products are tested by immnoelectrophoresis, gel diffusion and ELISA techniques. They react specifically with IgG and may recognize other immunoglobulin types that have light chains in common with IgG. Antibodies to IgG may cross react with the immunoglobulins of other mammalian species if common binding sites are shared. No antibody is detectable to non-immunoglobulin serum components.

Labeled affinity purified antibodies are excellent for both histochemical/cytochemical staining procedures and for use in enzyme amplified immunoassays such as microplate and membrane ELISA. Serial dilutions of all antibody reagents should be performed to determine the best working concentrations under a given set of assay conditions.