Experimental 6 log10 white cell-reduction filters for red cells

Area of Science:

• Transfusion Medicine
• Blood Component Processing
• Filtration Technology

Background:

• White cell (WBC) reduction in blood components is crucial for minimizing transfusion-related complications.
• Existing filters achieve approximately 3 log10 WBC reduction, which is insufficient for certain safety goals.
• Complications include WBC-associated HLA alloimmunization and transmission of cell-associated viral diseases.

Purpose of the Study:

• To evaluate the performance of two experimental filters designed for enhanced WBC reduction.
• To assess the filters' ability to remove 6 log10 WBCs from fresh red blood cells (RBCs).
• To determine the impact of filtration on RBC storage parameters and shelf life.

Main Methods:

• Two experimental filters targeting 6 log10 WBC reduction were tested on fresh RBCs.
• Filtration time and RBC loss were measured under non-optimized conditions.
• Storage parameters of filtered RBCs were monitored over a 42-day period.

Main Results:

• Both experimental filters successfully achieved the objective of 6 log10 WBC reduction.
• Filtration was completed in under 40 minutes with less than 15% RBC loss.
• Filtered RBCs maintained normal storage parameters throughout the 42-day storage period.

Conclusions:

• The experimental filters demonstrate high efficacy in WBC reduction from RBCs.
• These filters, when integrated with sterile docking devices or collection sets, can provide highly WBC-reduced RBCs.
• This technology promises to improve transfusion safety by significantly reducing WBC-associated risks.