Antiserum was solid phase adsorbed to ensure subclass specificity. The antibody was isolated by affinity chromatography using antigen coupled to agarose beads and conjugated to fluorescein isothiocyanate (FITC).

Prior to conjugation, immunoglobulin concentration was determined using Beer’s Law where 1mg/mL IgG has an A280 of 1.4.

By immunoelectrophoretic and ELISA this antibody reacts specifically with horse IgG(T). This antibody may cross react with IgG from other species.