| Catalog Number |
22226 |
| Medical Device Problem Code |
False Positive Result (1227)
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| Health Effect - Clinical Code |
No Known Impact Or Consequence To Patient (2692)
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Type of Reportable Event
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Malfunction
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Event or Problem Description
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A customer in (b)(6) notified biomerieux of a false positive cefoxitin screen for a patient staphylococcus aureus strain in association with the vitek® ast-gp67 test kit (ref# 22226, lot# 1321039203).Software version (b)(4).The customer identified the strain as staphylococcus aureus using the vitek® ms.Initial test results: ast-gp67.Lot 1321039203.Cefoxitin screen (oxsf) = positive.Oxacillin (ox1) - mic = 0.5, changed to resistant.Expected results: cefoxitin screen (oxsf) = negative.Oxacillin (ox1) = susceptible.Alternate test results: disk diffusion: cefoxitin = susceptible.Oxacillin = susceptible.Pcr filmarray pneumonia plus panel meca/c mecj not detected.Result: filmarray sa detected but not resistance genes.Repeat testing results: ast-gp67.Lot 1321039203.Cefoxitin screen (oxsf) = negative.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 biomérieux internal investigation will be initiated.
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Additional Manufacturer Narrative
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This report was initially submitted following notification from a customer in hong kong regarding false positive cefoxitin screen (oxsf) results for a patient staphylococcus aureus strain in association with the vitek® ast-gp67 test kit (ref# 22226, lot# 1321039203).Software version 8.01.Initial testing resulted in a positive cefoxitin screen, while repeat testing was negative.The customer identified the strain as staphylococcus aureus using the vitek® ms.The isolate is not available for submittal.Submittal of the isolate is required in order to confirm a vitek® 2 discrepancy compared to the reference methods.Since the isolate could not be submitted for investigational purposes, no additional investigation could be completed.Vitek® 2 ast-gp67 cards, lot 1321039203 met final qc release criteria.This lot passed qc performance testing.
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Search Alerts/Recalls
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