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An internal biomérieux investigation was initiated due to a customer report of the misidentification of providencia stuartii as aeromonas salmonicida when testing with the vitek® 2 gn card lot # 2410348203 and using vitek 2 software version 8.01.The strain was from an eqa survey and identified by maldi (bruker).Strain and raw data are not available.Investigation: the customer reported setting up the strain from columbia blood agar that incubated for 20+/-2 hrs at 37c.Mcfarland was prepared within range and saline was sterile.The last pm of the system had been performed in (b)(6) 2018 and was not due until (b)(6) 2019; however, a pm was performed on the system at the time of the complaint investigation, and all issues were resolved.One lab report was submitted showing a very good identification of a.Salmonicda with only one positive reaction.In addition there were 14 atypical negative reactions (proa, o129r, bnag, dtre, suct, dglu, dmne, tyra, cit, naga, ellm, ggt, off, phos) for an identification of p.Stuartii according to the gn knowledge base.Atypical negative reactions can indicate a strain with decreased viability, user set up error or an atypical strain.Since the issue corrected upon pm of the instrument, it appears that the instrument contributed to the misidentification.However, without the strain or raw data, it's not possible to further evaluate the cause of the misidentification.The vitek 2 gn id card lot# 2410348203 met final qc release criteria.This lot passed qc performance testing.
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