Dilini Christina Ranasinghe: Why Leucoreduction Timing Matters in Transfusion Safety
Dilini Christina Ranasinghe, Medical Officer at the Immunohaematology Reference Laboratory of the National Blood Centre, shared a post on LinkedIn:
“Transfusion reactions may manifest at the bedside, but are often determined much earlier in the processing phase, with many reactions occuring due to donor leucocytes and their byproducts which brings into focus the role of leucoreduction.
In Sri Lanka, practice largely involves post-storage filtration at the blood bank prior to issue — as a practical approach in a resource-variable setting, balancing cost and feasibility, thus offering a controlled and standardised approach compared to bedside filtration.
However, in minimising transfusion reactions, the key distinction lies in timing.
With post-storage filtration, blood bank (pre-issue) or bedside (post-issue), leukocytes are removed after storage, when cytokines and other mediators may have already accumulated.
In contrast, pre-storage leucoreduction removes them early, reducing this process.
So while blood bank filtration offers advantages over bedside filtration in terms of quality and consistency, it still differs biologically from pre-storage leucoreduction.
Pre-storage leucoreduction is the gold standard, and moving towards universal implementation is an important goal to optimise transfusion safety and align with best practices.
Reading this article prompted me to reflect on these aspects of component processing and their impact on transfusion outcomes.
It was a useful reminder that transfusion safety is shaped not only by compatibility testing, but by decisions made throughout the entire vein-to-vein process.”

Stay updated with Hemostasis Today.
-
Jul 11, 2026, 11:31Acute DVT Management and the Role of Interventions Beyond Anticoagulation: Insights From ISTH 2026
-
Jul 11, 2026, 09:48International Collaboration in Antithrombotic Stewardship – Anticoagulation Forum
-
Jul 11, 2026, 09:45Presenting New CRP-A Data at ISTH 2026 – Pplus Medical Limited
-
Jul 11, 2026, 09:41David Smadja: Addressing the Hidden Threat of Medical Misinformation at ISTH 2026
-
Jul 11, 2026, 09:40Dianne E. van der Wal: The Latest Advances in Hemostasis and Thrombosis on First Day of ISTH 2026
-
Jul 11, 2026, 09:34Heading to ISTH 2026 in Paris Join our session on patient led VTE education – NBCA
-
Jul 11, 2026, 09:33Flora Peyvandi: Empowering the Next Generation of ISTH
-
Jul 11, 2026, 09:28Ruah Alyamany: Surgical and Procedural Bleeding Risk – Perioperative AC guidance
-
Jul 11, 2026, 09:24Habib Bennaceur: New Perspectives on Patient-Centered Hemophilia Care at ISTH 2026