HONOLULU (KHON2) -- Blood donors around the islands have been called to help in a critical shortage, specifically those with O-negative and O-positive blood. Download the free KHON2 app for iOS or Android to stay informed on the latest news The Blood Bank of Hawaii revealed there is less than a day's worth of blood remaining due to high hospital demand and a decline in donor turnout. New facility to provide shelter, care for Oahu’s medically vulnerable homeless “O-Blood or O-Red Cells is the universal donor type and that’s because when patients come into the emergency room, if they’re unknown, we don’t know their blood types and so the only blood type that we can give them safely is type-O blood. And that’s why type O is always short," Kim-Anh Nguyen M.D., President and CEO of Blood Bank of Hawaii explained. Currently, the BBH is looking to secure 150 to 200 daily appointments to help meet hospital needs. “We usually need 150-200 donors every day, every single day, what’s amazing to know is of these 150 only 3 out of 100 are going to be type O-negative," she said. Officials stressed, however, the immediate need for O-negative and O-positive donations. “Unfortunately, this morning we opened our doors with less than one day's supply of universal O-negative blood and that makes us really nervous for a couple of reasons," Nguyen added. As trauma, violence and patients from motor vehicle accidents flood Hawaii's emergency rooms, blood centers are prompted "to issue urgent appeals for group-O red cells. In addition, Heart Week is approaching for the Kapiolani Women and Children's Medical Center where blood is needed to support major open-heart surgeries. “We’ve got quite a way, quite a hole that we need to dig out of and that’s why we need people in this community to step up.” Check out more news from around Hawaii New and returning donors must schedule an appointment for any day of the week at the following locations: Young Street Donor Center Waikele Center Mobile blood drives Donors can register on the BBH's website or call (808) 848-4770 for more information.