Customer reported false low cell counts (rbc and wbc) intermittently but increased in frequency of occurrence.The microscopy results did not match the chemistry results which the customer claims are correct.The day shift supervisor has been catching the incorrect samples; some of which have been reported to the floor.Although some results were reported to the physician, there were no reports of change to patient management as a result.An iris field service engineer ran 10 tubes of focus controls for a precision study where 5% of data was low.After numerous valve replacements and all tubing from ebv valve to rinse well, focus and controls passed.System was operational.
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