Several hundred students wanting to give blood have already called or dropped by UHS to leave their contact information, said UHS Director David S. Rosenthal `59.

“There’s been a lot of interest,” Rosenthal said. “That’s why we want to get this message out, that it’s not just today, but we’ll need donations long-term.”

Students can also e-mail UHS at donation@uhs.harvard.edu with contact information and blood type. For updated information, check out www.uhs.harvard.edu.

Kyle G. O’Brien ’02 was one of the students who dropped by UHS yesterday to try to donate blood. A Long Island resident, O’Brien said he wanted to give blood to help the victims.

“[We’ll do] anything we can do to help,” he said. “It’s hard because half my hometown, along with my family and friends, works in that building. Fortunately they all got out, but it hits close to home.”

Among other relief efforts, UHS is also compiling a list of organizations accepting food and clothing donations.

Rosenthal added that mental health counselors are available through Friday to counsel students affected by the tragedy.