| Model Number |
442193 |
| Medical Device Problem Code |
False Positive Result (1227)
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| Health Effect - Clinical Code |
No Clinical Signs, Symptoms or Conditions (4582)
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| Date of Event |
05/18/2021
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Type of Reportable Event
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Malfunction
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Additional Manufacturer Narrative
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Initial reporter address: (b)(6).A device evaluation is anticipated, but has not yet begun.Upon completion of the investigation, a supplemental report will be filed.
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Event or Problem Description
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It was reported while using bd bactec" plus anaerobic/f culture vials false positive results were obtained.Confirmatory subculture was performed.Results were not reported and there was no report of patient impact.The following information was provided by the initial reporter: randomly some bottles are giving false positive in anaerobic media.How were the results determined to be erroneous - false positive? ans : instrument showing positive after subculture growth was not grown on media.Were any erroneous results reported? ans: no.If so - was any treatment changed due to the erroneous results reported? ans: no.Do you have plots available? ans: no , i will arrange but it takes little time.What is the instrument serial number? need to check.What is the software version of the instrument? latest version need to check and confirm.Has an engineer investigated the instrument for any problems? no instrument log activity has checked.Are all the false positive samples from one instrument? yes.Are all the false positive samples from one drawer? fx 200 randomly came on specific media bottle.
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Additional Manufacturer Narrative
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H6: investigation summary: customer reported a false positive defect.Bd was unable to reproduce customer experience with the bactec product.A false positive response was not observed when retention samples were tested.Batch history records were reviewed, and all testing were within specification for product release.Users are cautioned in the package insert under limitation of the procedure: ¿a gram-stained smear from culture medium may contain small number of non-viable organisms derived from media constituents, staining reagents, immersion oil, glass slide and specimens used for inoculation.There are many factors that can influence the false positive rate, including blood volume, blood cell counts, environmental factors, and media lot to lot variations.Complaint is unconfirmed based on retention samples and batch history record review.Neither plots nor log files were received.No correctives actions were required.H3 other text : see h10.
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Event or Problem Description
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It was reported while using bd bactec¿ plus anaerobic/f culture vials false positive results were obtained.Confirmatory subculture was performed.Results were not reported and there was no report of patient impact.The following information was provided by the initial reporter: randomly some bottles are giving false positive in anaerobic media.1) how were the results determined to be erroneous - false positive? ans : instrument showing positive after subculture growth was not grown on media.2) were any erroneous results reported? ans: no.3) if so - was any treatment changed due to the erroneous results reported? ans: no.4) do you have plots available? ans: no , i will arrange but it takes little time.5) what is the instrument serial number? need to check.6) what is the software version of the instrument? latest version need to check and confirm.7) has an engineer investigated the instrument for any problems? no instrument log activity has checked.8) are all the false positive samples from one instrument? yes.9) are all the false positive samples from one drawer? fx 200 randomly came on specific media bottle.
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Search Alerts/Recalls
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