It was reported that while using bd bbl¿ chromagar® mrsa ii 100mm (20 each), there was excessive growth seen on 10 plates across two lot numbers.The following information was provided by the initial reporter: "growth of mssa(methicillin susceptible staph.Aureus).During use, the customer contacted me because sometimes there are isolated mssa that grow on the mrsa chrome plate, look like mrsa but are confirmed to be sensitive by follow-up tests.Normally the growth of mssa should be inhibited but the customer noticed that mssa usually grow shortly before the expiry date ends but the plates are never used after the expiry date.As a confirmatory test, identification is always done with maldi-tof, a pbp2a test is carried out and then resistance in the (b)(6).No false results were sent to physicians.No patient was treated based on incorrect results and therefore there were no negative consequences".
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