URGENT NEED: We have an urgent need to replenish our supply of Type O-negative red blood cells. Multiple victims of a trauma are being treated at a hospital that receives blood components from our Blood Center. Blood is available for patient care but we must now replace a high volume of units used in the trauma. O-negative donors, please schedule an appointment for donation as soon as possible by calling (800) 747-5401 or via our online scheduling system.