For many uses in the laboratory, polyclonal antibodies work well, but for some types of assays, they lack sufficient because they cross-react with inappropriate antigens.
specificity
sensitivity
accuracy
reactivity

Accuracy.

Explanation:

In case of polyclonal antibodies, there is a chances that the result may vary. This is because the affinity of inappropriate antigen can be same as like of appropriate antigen towards antibody.

The polyclonal antibody might bind with inappropriate antigen in case assays performed in laboratory.

There will be no accuracy of results in this case.

answer; i believe its (ovulation);