User facility contacted magellan's product support team to report the instrument was generating a "used sensor" error message at the end of the countdown instead of a result.The user prepped and tested 3-4 sensors for the instrument, but the error message persisted.The instrument was returned to magellan.During investigative testing by magellan, the instrument generated a test failed error message for one sample (the event log showed the user encountered multiple errors) and out of range high results with three of four quality control (qc) samples run.In addition, the event logs indicate external qc was not consistently being performed in accordance with the manufacturer's instructions.Periodic testing with qc controls is used to monitor the instrument's performance.During visual inspection corrosion was noted on the sensor pins.Corrosion of the pins occurs when there is overexposure of the pins to the assay's acidic treatment reagent.This occurs when used test sensors are not removed immediately after testing (per instructions in the package insert) or when too much sample is added to the test sensors.No user, patient impact or harm was reported.However, because the instrument was able to generate results there is potential that an erroneous patient result was generated.Magellan provided the customer with a new instrument and additional information on proper analyzer maintenance.Case (b)(4).
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