Should I include test scores and recommender information given elsewhere in my application in my CV for graduate admissions? All of the universities I am applying to require a CV as part of the application process.

As I am requesting the recommender from the on-line application and also giving the test scores there, is it necessary to add these in the CV?
Do you mean references? Occasionally you will see a CV that lists references or it will say "References available on request." I myself have always just left them off. 

As far as test scores go, it is typical to leave off them off since you have to send the official scores separately anyway.