We are a large trauma center. We currenlty transfuse about 28,000 units of blood a year. We keep a 10 day supply of blood of our shelves at any given time. We track our inventory daily to keep it at the same level. We order more blood when our inventory get low and cancel orders when it gets too high. We have not had to be in triage for the past two years. We only waste about 18-24 units of PRBC's a month. We stopped getting AB positive PRBC's and our expired units have decreased even more. We feel comfortable having this amount so if there is a shortage of blood or we get into a major diaster we will have enough blood to meet our patients need. We have not had issue with upper managment and the amount we spend on blood.