The essential historical knowledge and expertise developed over the past 5-6 decades on the safety / efficacy of conventional blood components therapy by blood transfusion establishments have guided the development of validated methods which have ensure optimal safety margins for frozen blood and its bioproducts with or even without pathogen reduction. Newer generations of pathogen reduced frozen red blood cell, plasma and platelet products and the standardised and safer pooling of human platelet lysate are now become available for potential clinical use. These types of whole blood-derived bioproducts not only reduce the risk of transmission of range of pathogenic blood-borne pathogen. As cryopreservation can be combined with PRT without significantly compromising in vitro quality characteristics or physiological capabilities, it allows us to maximize the available inventory of these blood products in both civil and military trauma settings. The main objective of this overview is to update readers and scientific / medical communities of the various building blocks needed to optimally grantee the pathogen safety of whole blood-derived bioproducts, with minimal untoward events to the recipients. While this is an emerging area, we are seeing the numerous potential opportunities that cryopreservation and pathogen inactivation can have on the transfused patient outcomes. This manuscript is informed by recent publications on this topic.

Centre for Innovation Canadian Blood Services Department of Laboratory Medicine and Pathology University of Alberta Edmonton Alberta Canada

Department of Haematology and Blood Transfusion Military University Hospital Prague Faculty of Biomedical Engineering Czech Technical University Prague Prague Czech Republic

Department of Haematology and Blood Transfusion Military University Hospital Prague Faculty of Military Health Sciences University of Defence Hradec Kralove Hradec Kralove Czech Republic

International Consultancy in Blood Components Quality Safety Improvement Audit Inspection and DDR Strategies London England UK

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