This report was initially submitted following notification from a customer in switzerland regarding misidentifications of listeria monocytogenes when testing two (2) strains with api® listeria 10strips+10media (ref 10300, lot 1007942830).The listeria monocytogenes strains included one (1) isolated from food samples and one (1) internal l.Monocytogenes qc strain (atcc® 13932¿).The investigation included batch record analysis.There were no nonconformities observed related to the subject lot.Quality control results were in compliance with specifications for batch release.Internal testing was performed on api® listeria 10strips+10media lot 1007942830 (related to the complaint) and lot 1007999710 (used as a reference lot).Three (3) strains mentioned in the package insert api listeria 07887 t, and one (1) strain from r&d (atcc® 13932¿) were tested on the lots.There were no performance issues or identification errors observed during testing.The customers misidentification was not reproduced.
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