has part is specified output of immunoglobulin complex, circulating processed material enzyme enzyme-linked antibody A processed material that is comprised of an antibody that is covalently linked to an enzyme through bioconjugation. The enzyme can be used as a detection method when the enzyme's reaction produces a detectable signal, for example a color change when the substrate is added. Bjoern Peters, Randi Vita, James A. Overton enzyme-linked antibody OBI Goat anti-Mouse IgG-HRP (horse radish peroxidase) is an antibody linked to the enzyme horseradish peroxidase (HRP) that catalyzes the conversion of chromogenic substrates into colored products producing light when acting on chemiluminescent substrates (ECL). addition of molecular label pending final vetting