On (b)(6) 2015 a customer in (b)(6) reported to biomerieux a false susceptible results when using chromid mrsa smart 20 plates.The customer stated product was used prior to expiration date.Customer was testing a patient rectal specimen, which was known to be (b)(6).The chromid mrsa smart plate did not grow with suspect colonies.When using a different media (b)(6) (bd), results indicated (b)(6).Customer did not report any patient harm or delay in reporting results.
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Biomerieux performed and investigation into a (b)(6) clinical strain (rectal sample) when using a chromid mrsa smart kit.The customer reported that the coloration was not specific, white colonies observed, and only small colonies were observed after 16 and 40 hours.The temperature of incubation was 37°c.Confirmation of the strain was performed.The customer did not return the strain in question; therefore, testing was unable to be performed to confirm the customer's issue.The batch production records were reviewed and no related anomalies were noted.A trend review was performed for this lot and no other related complaints were found.A review of the package insert versus the customer procedure was performed.The customer used a rectal swab sample and read the results at 16 and 40 hours.Per the package insert the results should be read between 18 and 24 hours after incubation is started; therefore the customer did not perform either reading within the recommended reading window.Additionally, a rectal swab sample is not an approved source of organism for the chromid mrsa smart kit.The issue reported by the customer could not be confirmed.
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