UCLA Blood And Platelet Donation Center 1045 Gayley Ave, Los Angeles, CA90024 The UCLA Blood And Platelet Donation Center is a local blood collection clinic serving the UCLA Medical Center and the…More surrounding communities. Volunteers may donate whole blood or platelets at this location. Appointments are suggested for donors. Whole blood donation takes about one hour and platelet donation can take about three hours. Volunteers receive snacks, drinks and movie tickets in exchange for their donation. Parking passes are available for donors.