A situation in which antigen is in excess as compared to antibody is called:

Question

Quizplus · Accepted Answer

The prozone phenomenon occurs when the amount of antigen in a sample is in excess as compared to the amount of antibody present. This results in decreased antigen-antibody complex formation and therefore, a false negative result in the test. In contrast, the postzone occurs when the amount of antibody is in excess as compared to the antigen, resulting in partial or complete inhibition of the test reaction, leading to false-negative or false-positive results. The equivalence zone represents the point at which antigen and antibody are present in equal amounts, resulting in optimal complex formation and a positive test result.

A Situation in Which Antigen Is in Excess as Compared