Please call 1-800-RED CROSS (1-800-733-2767) or visit RedCrossBlood.org and enter: WARRENCOMM to schedule an appointment. Maximize your blood donation. Help more patients. If you are an eligible type O, B - or A - donor, consider making a Power Red donation. Red blood cells are the most commonly transfused blood component. Streamline your donation experience and save up to 15 minutes by visiting RedCrossBlood.org/RapidPass to complete your pre-donation reading and health history questions on the day of your appointment.