For a blood transfusion for anemia, SAGMAN erythrocytes are used. One unit is obtained from 450 ml blood. Most of the plasma is removed and replaced with 100 ml SAGMAN solution (Saltwater-Adenine-Glucose-Mannitol). Hematocrit is about 0.60%.
One unit contains 240-300 x 109
platelets and is prepared from blood donors with type O and A. In acute situations, the receiver's blood group is of minor importance.
Two kinds of platelet products are available:
- Apheresis platelets produced from thrombophereses from one donor
- Buffcoat platelets produced from buffy coat from 4 donors
All cellular blood products should be leukocyte filtered. Leukocyte filtration is done to remove antigen-presenting and virus-bearing cells. 99.99% of leukocytes in the unit are removed.
Blood and thrombocytes are irradiated to a minimum of 25 Gy in the blood bank to eliminate T-lymphocytes.
This is done for:
- Bone marrow transplant or stem cell transplant (1 month before or 3 months after HMAS until 1 year after allogeneic stem cell transplant)
- For use of HLA-compatible platelet concentrations
- For all transfusions from relatives
- For use of fresh blood
- For use of fludarabine