. . "The term ???chemical moiety A??? is a natural or syntheic moiety that is typically a label but can also be, without limitation, a reactive group, typically an amine reactive group such as succinimidyl ester that functions to covalently bind a polymer including agarose, acrylamide, microparticles, a protein such as an antibody or an antigen, a phosphate target molecule and a ligand, including those" . .