Document Detail

White particulate matter found in blood collection bags consist of platelets and leukocytes.
MedLine Citation:
PMID:  15225233     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: In late January 2003, some blood centers and hospitals throughout the US voluntarily sus-pended the use of some RBC and plasma units for trans-fusion due to the presence of unknown white particulate matter (WPM) in these units. To better understand the WPM phenomena, a number of technologies were used to establish the nature of the particulates observed in Terumo Collection sets. STUDY DESIGN AND METHODS: All AS-5 nonleuko-reduced RBCs and plasma units were visually inspected for WPM by placing the bags on a flat counter, undisturbed, for approximately 10 minutes and then perform-ing a visual examination for particles. Particles were isolated and placed on microscope slides or in plastic tubes for further analysis. Electron microscopy, bright field microscopy, differential interference contrast microscopy, infrared spectroscopy, and flow cytometry procedures were performed to establish the nature of the particulate matter. In addition, leukoreduction filters and blood transfusion sets were used on RBCs units with WPM. RESULTS: The particles were mostly composed of PLTs and WBCs, and fragments of these cells. All macroscopic WPM was removed from RBCs with leukoeduction and transfusion filters. CONCLUSIONS: WPM originated from PLTs and WBCs. Foreign matter (e.g., plastic) was not observed in any of the units. Leukoreduction and transfusion filters can be used to remove macroscopic WPM.
F J Rentas; V W Macdonald; S W Rothwell; S J McFaul; L V Asher; A M Kennedy; P J Hmel; C J Meledandri; J M Salata; R W Harman; T J Reid
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Transfusion     Volume:  44     ISSN:  0041-1132     ISO Abbreviation:  Transfusion     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-06-30     Completed Date:  2004-07-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417360     Medline TA:  Transfusion     Country:  United States    
Other Details:
Languages:  eng     Pagination:  959-66     Citation Subset:  IM    
Department of Blood Research, Department of Pathology, Walter Reed Army Institute of Research, Silver Spring, MD, USA.
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MeSH Terms
Blood Platelets
Blood Specimen Collection*
Blood Transfusion*
Cell Aggregation
Flow Cytometry
Spectrophotometry, Infrared
Comment In:
Transfusion. 2004 Jul;44(7):956-8   [PMID:  15225232 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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