[Blood components: indication and notice of transfusion]

The total number of blood donors in 1996 was 6 millions, and the number of 200 ml whole blood donors was 2.16 million(35.7%), whereas the numbers of 400 ml and apheresis donors were 2.66 million(44.1%), and 1.22 million(20.2%) respectively. From the donated blood, about 18.78 million units(1u: equivalent to 200 ml WB derived) of blood components were prepared and used for blood transfusion. Currently, whole blood is separated and prepared into MAP red cell concentrates and FFP, and all platelet concentrates are prepared from apheresis donations. In 1996, MAP red cell concentrates occupied 30.5% of all blood supply for transfusion, whereas FFP occupied 27.7% and PC occupied 40.2%.