[125993220]
A customer from the united states notified biom? Rieux of misidentification results between the vitek? 2 gp id card (ref 21342) and the vitek? Ms instrument. The customer reported an isolate from a blood culture was identified by a latex agglutination test as staphylococcus aureus and the susceptibility yielded a vancomycin of 4ug/ml. Etest? Was performed to confirm. The isolate was submitted to a reference lab for oritavancin testing, and was identified as a possible s. Cohnii, so the customer reevaluated the blood culture and determined the presence of three (3) morphologically different isolates. The three (3) isolates were identified as staphylococcus aureus with the vitek ms on (b)(6) 2018 in addition to vitek 2 testing in which the results did not match. Tube coagulation appeared to be positive for all isolates. The final identification from the reference lab was s. Lugdunensis, which led the customer to initially report that the vitek ms led to the misidentification. However, the isolates were submitted for internal investigation by biom? Rieux. The investigation included 16s sequencing of the isolates, which gave an identification to staphylococcus aureus. According to r&d, additional phenotypical data should be considered to select only one species. The investigation concluded on 11-sep-2018. A complaint was opened against the vitek? 2 gp id card for the following misidentifications: isolate 1 = s. Warneri (thermofisher identified this isolate as s. Lugdunensis. ) isolate 2 = low discrimination to s. Caprae, s. Cohnii ssp cohnii, s. Vitulinus. Isolate 3 = s. Lugdunensis. There is no indication or report from the laboratory that the discrepant result led to any adverse event related to the patient's state of health. A biom? Rieux internal investigation will be initiated.
Patient Sequence No: 1, Text Type: D, B5