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Investigation: the run data file (rdf) was analyzed for this event there was no conclusive root cause identified for the higher-than-expected wbc content in the platelet product reported for this procedure, however it is possible that the higher-than-expected wbc content was the result of an escape of wbcs from the lrs chamber during a portion of the procedure.The signals indicate that the device had difficulty maintaining steady state operation during portions of the procedure, so it cannot be ruled out that the needle line access may have shifted and could potentially have impacted the collection.Additionally, based on the available information, it cannot be ruled out that the higher-than-expected wbc content in the platelet product may have been donor-related.The device history records (dhr) were reviewed for this lot. there were no events noted in the dhr that would have contributed to the elevated wbc count experienced by the customer.Root cause: there was no conclusive root cause identified for the higher-than-expected wbc content in the platelet product reported for this procedure, however it is possible that the higher-than-expected wbc content was the result of an escape of wbcs from the lrs chamber during a portion of the procedure.The signals indicate that the device had difficulty maintaining steady state operation during portions of the procedure, so it cannot be ruled out that the needle line access may have shifted and could potentially have impacted the collection.Additionally, based on the available information, it cannot be ruled out that the higher-than-expected wbc content in the platelet product may have been donor-related.
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