The double red cell donation normally takes an additional 30 to 45 minutes compared to the normal full blood donation. I arrived at the LDS church with an appointment at 12:30 and left the building at approximately 2:20. There were so many people there, it was awesome. They were running about 45 minutes behind because of all the people that showed up. Appointments did not matter on Tuesday. LOL. But like I said it didn't matter because we were all out there saving lives!"