She said there are three categories for the competition -- small, large and greek organizations.
"The purpose is really just to get people out to donate blood," Kirner said.
Both universities have set a goal to collect 2,000 units of blood by the end of the challenge. Penn State will attempt to do this by holding 20 blood drives across campus throughout the next 14 days.
Although bragging rights between the schools may be motivation, Keeler said the real reason donating blood is important is to help stock the blood banks before Thanksgiving and Christmas holidays, when blood donations tend to be lower.
Students interested in giving blood can make an appointment online. Although they not required, Keeler said they are recommended.
"The donor benefits because he or she is taken as a priority over people who don't have an appointment," she said. "We try to get donors with appointments into their health history within 15 minutes of their appointment time."
To be eligible to give blood, donors must be over the age of 17, weigh at least 110 pounds and be in generally good health.
For a complete listing of donation sites or to make an appointment, go to psuredcross.org.