The customer reported the following results generated on a cell-dyn 1800 analyzer in their lab: hematocrit= 29.0%, hemoglobin= 9.3 g/dl.The sample was tested at another lab with the following results (analyzer system not provided): hematocrit= 28.7%, hemoglobin= 7.6 g/dl.Controls have remained within specifications.The customer retested the sample again with similar results.No suspect results were reported from the lab.There is no impact to patient management reported.
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Limited information was made available from the customer site for this evaluation.Numerous requests were made with no reply.Therefore, based on the limited data and information available, several factors could have affected the results seen at this customer site: clogging or blockage in the wbc and rbc mixing cups, pinched valves, tubing, or t-fittings, blockage due to salt build up, leaks in lines around hemoglobin flow cell, dirty flow cell due to organic build up and bubbles in the lines.In addition, the presence of an interfering substance and conditions affecting the results for this one patient's sample could not be eliminated.Review of product historical data for any trends and all customer complaints received for this issue did not identify any adverse trends or abnormal complaint activity.The cell-dyn 1800 system operator manual provides information to address the current customer issue.Based on the results of this evaluation and the information from the customer site, a product malfunction was identified as the device failed to meet performance specifications or otherwise perform as intended at the customer site.However, no systemic issue or product deficiency was identified.
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