The development of antibodies for diagnostics or therapeutics requires comprehensive characterization of affinity, specificity, and mechanism of action. Affinity measurements could screen different isolates of an antibody to identify those that are most effective at binding antigen. Also, measurements of the capacity of an antibody to bind other compounds that are structurally related to the original immunizing antigen can help establish the likelihood of whether an antibody will cross react non-specifically with other molecules that might accompany the antigen. Binding…