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Collection of WBC‐reduced single‐donor PLT concentrates with a new blood cell separator: results of a multicenter study
Author(s) -
Moog Roger,
Zeiler Thomas,
Heuft HansGert,
Stephan Berckard,
Fischer Eike G.,
Kretschmer Volker,
RödelSpieker Regina,
Strasser Stephan,
Zingsem Jürgen
Publication year - 2003
Publication title -
transfusion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.045
H-Index - 132
eISSN - 1537-2995
pISSN - 0041-1132
DOI - 10.1046/j.1537-2995.2003.00467.x
Subject(s) - multicenter study , medicine , blood donor , nuclear medicine , chromatography , chemistry , surgery , immunology , randomized controlled trial
BACKGROUND: A new cell separator (COM.TEC, Fresenius) was recently developed aimed at efficient collection of WBC‐reduced single‐donor PLT concentrates (SDPs). STUDY DESIGN AND METHODS: Five German centers collected 554 WBC‐reduced SDPs with help of the COM.TEC cell separator. Two multicenter cell counting studies were performed at the beginning and at the end of the study to document uniform counting results among the participating centers. RESULTS: A total of 441 (79.6%) PLT collections were included in the study according to the protocol. A total of 342 single‐dose and 99 double‐dose SDPs were collected. For single‐dose SDPs, an average blood volume of 2826 ± 409 mL was processed in a donation time of 55 ± 11 minutes. Mean PLT yield of these products was 3.11 × 10 11 ± 0.40 × 10 11 and the WBC contamination was 0.11 × 10 6 ± 0.20 × 10 6 . For double‐dose SDPs (PLT count, 5.29 ± 0.93 × 10 11 ), 3943 ± 639 mL was processed. The average difference between the target and the collected PLT concentration was −2.8 ± 12.0 percent for single‐dose SDPs and −1.8 ± 9.5 for double‐dose SDPs, respectively. The collection efficiency was 53.7 ± 5.8 percent for single‐dose SDPs and 58.2 ± 6.2 percent for double‐dose SDPs. If all results of each sample from the counting study were set to unity (to the mean over all centers), most PLT determinations were very similar to the mean, for example, near or 1 if set to unity. CONCLUSION: The COM.TEC machine makes it possible to obtain WBC‐reduced SDPs that comply with current standards.