Discordant, (b)(6) results above the cutoff for mandatory confirmation testing were obtained on two patient samples on an advia centaur xp instrument.The discordant results were not reported to the physician(s).The samples were repeated on the same instrument and resulted (b)(6).It is unknown if the corrected results were reported to the physician(s).There are no reports of patient intervention or adverse health consequences due to the discordant, (b)(6) results.
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A siemens customer service engineer (cse) was dispatched to the customer site.After evaluation of the instrument and instrument data, the cse discovered that the acid pump was damaged and replaced it.The cse also replaced the probe wash aspirate and base pump.The cause of the discordant, (b)(6) results is unknown.The instrument is performing according to specifications.No further evaluation of the device is required.
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