The customer stated that they no longer have any remaining reagent to return for investigation.They stated that they only perform maintenance if qc fails.They run qc once a week and it has been passing.Per the instrument manual, "clean the test table and table insert weekly or more frequently, if necessary, to maintain the analyzer for the following reasons: ensure that the analyzer operates properly, provide accurate test results, prevent contamination, avoid bacterial growth".The customer has since cleaned the calibration bar and is operational.A review of the certificate of analysis for the lot in use at the time of the event shows it was meeting specifications at the time of release.
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