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Transfusion of blood and blood components is one of the widely used medical procedures. The responsibility for provision of blood and blood components lies with Polish blood transfusion centers (CKiK) substantively supervised by the Institute of Hematology and Transfusion Medicine. Hospital based blood banks, hospital wards, immunohematology laboratories are supervised by CKiK. Every year approximately 600 thousand people donate blood, more than 75% of which are regular donors. The annual number of donations is maintained at a constant level of about 1.3 million. The aim of this position paper is to present the current status, achievements and advancement in collection, preparation and testing procedures and methods used to obtain the best possible quality blood components dedicated for clinical use. The aim is also to show the structure of blood transfusion service in Poland. Collaboration of all organizational units involved in transfusion medicine is crucial for providing high quality health care for patients. Polish transfusiologists and blood transfusion officers have largely contributed to transfusion science with numerous publications and significant research work. The implementation of novel methods and ongoing research positions Polish blood transfusion service among those of highly developed countries.

Clinical efficacy of PC transfusions in patients immunized with Human Leukocyte Antigens (HLA) and/or Human Platelet Antigens (HPA) can be improved by relying on platelets from donors typed for HPA and/or HLA. A specific group of PC recipients are newborns with alloimmune thrombocytopenia (FNAIT) resulting from maternal alloimmunization during pregnancy against specific fetal platelet antigens HPA (especially HPA-1a) produced by the mother as a result of fetomaternal HPA incompatibility. The study aim was to assess the demand and availability for HPA/HLA typed donors in Poland. Outcome of a survey distributed to 23 Polish blood transfusion centers (CKiK) supplemented by data acquired in direct contact (phone) revealed that: 1/ demand for PCs from donors with HLA and/or HPA typed antigens was reported in 7/23 (33.3%) CKiK; 2 / over a 1.5 year period, 1 788 PCs were prepared for patients with anti-HLA- antibodies, 63 PCs for patients with anti-HPA-antibodies and 58 PCs - for patients with anti-HLA and anti-HPA antibodies. FNAIT neonates were transfused with 35 PCs from register donors and 176 PCs from casual donors; 3 / in 13/23 CKiK (61.9%) PC selection for immunized patients was mainly based on crossmatching in LCT; 4 / registers report of 12,885 donors typed for HLA Class I antigens including 417 donors typed for HPA; 5 / nation-wide there are 133 HPA-1a negative donors available for immunized patients; they were selected after typing of 5 872 donors; The number of HPA/HLA typed donors for immunized patients is insufficient. as compared to other countries. Moreover, the demand for registered donors is steadily growing due to expension of FNAIT diagnostics currently performed at the Institute of Hematology and Transfusion Medicine (IHiT) but also in the laboratories of CKiK. One of the responsibilities of the blood transfusion service is to provide PCs for immunized patients.