antibody excess

an·ti·bod·y ex·cess

in a precipitation test, the presence of antibody in an amount greater than that required to combine with all of the antigen present. See: prozone.

an·ti·bod·y ex·cess

(an'ti-bod-ē eks'es)
In a precipitation test, the presence of antibody in an amount greater than that required to combine with all of the antigen present.
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The kinetics could be further improved by increasing the antibody excess, although the effect on background signal and assay sensitivity should also be taken into consideration.