Abstract

 Background and Objectives

 The accumulation of white particulate matter in blood bags, with the mechanism of formation unknown, has been rarely reported. However, the high number of platelets, blood lipids, and the like could help the white matter form.

 Case

 A 450 mL blood bag coated with 63 mL CPDA1 including the white matter detected was transferred from the blood center to the central quality control department. All test results on RBCs, white cells, platelets, hemoglobin, hematocrite, protein sera, triglyceride, and cholestrol were negative. The donor had no record of any medicine consumption. The microbial culture of white matter was negative.

 Conclusions

 Although no correlation has been clearly found between the accumulation of white matter and transfusion reactions, it is recommended to prevent administering the white matter including blood bags to the patient these blood bags should be quarantined for further analysis. The appearance of the blood bags before transfusion should be checked.