| Catalog Number |
20-005-018 |
| Medical Device Problem Code |
No Apparent Adverse Event (3189)
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| Health Effect - Clinical Code |
No Clinical Signs, Symptoms or Conditions (4582)
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| Date of Event |
05/15/2024
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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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On 5/15/2024 customer (b)(6) reported a discrepant result on bc-gp assay.Verigene detected staphylococcus lugdunensis, however maldi detected staphylococcus hominis.Verigene: staphylococcus ludgunesis detected.Maldi: staphylococcus hominis detected.Data review per verigene id software requirements specification (toast-srs-1042), in order for an organism to be detected the ic ratio must be greater than or equal to -0.4 and the nc ratio must be greater than 0.85.Review of test cartridge 01866515 shows staphylococcus ludgunesis was detected at exposure 1200 (ic: -0.28 nc: 0.86) with no other elevated signals.Pcl was detected at exposure 24 (ic: 0.81 nc: 0.99) and pc 2 was detected at exposure 150 with ic and nc values of 0.46 and 0.98 respectively.Camera images were clear with no impact on results.This was tested on (b)(6) 2024 on sp b2.Consumable review test cartridge lot: 031824018a extraction tray lot: 032524018b utility tray lot: lot information not available.There are no ncmrs associated with the lots utilized.There are ten other erroneous results reported for the staphylococcus ludgunesis target using the lots reported.Due to the amount of complaints, further investigation of test cartridge lot 031824018a will be documented in escalation case (b)(4).Device review verigene processor sp al: (b)(6) verigene reader: 18240003.Review of the verigene sp and reader device history was assessed for a time frame of 3 months prior to the reported discrepant result.Verigene sp s/n (b)(6) had one pm performed on this device and one complaint of a motor stall.The motor stall was resolved on site by replacing the optical sensor.This work is routine in nature and per verigene dha (vgl-gen-01-rm-dha) does not impact patient sample results as a motor stall prevents sample processing and results from generating.Verigene reader 18240003 had no work performed in the past 3 months.Thfurther investigation will be documented in escalation case (b)(4).Site performance a 6 month customer site performance for negative agreement of staphylococcus ludgunesis target was performed from (b)(6) 2023 to (b)(6) 2024.There was a negative agreement of 99.0% (684 not detected/691 expected not detected).Per the verigene gram positive blood culture nucleic acid test package insert (89-30000-00-782) the expected negative agreement for the staphylococcus ludgunesis target is 100% (with a cl of 99.7-99.9).Further investigation will be documented in escalation case (b)(4).Conclusion through investigation the cause of the reported false positive staphylococcus ludgunesis result is undetermined.Further investigation for root cause will be documented in escalation case (b)(4).The customer site is not performing within the expectations stated in the bc-gp package insert for the staphylococcus ludgunesis target.Although the erroneous result occurred, there was no injury or death to patient.
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Additional Manufacturer Narrative
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Through investigation the cause of the reported false positive staphylococcus ludgunesis result is undetermined.Further investigation for root cause will be documented in escalation case (b)(4).The customer site is not performing within the expectations stated in the bc-gp package insert for the staphylococcus ludgunesis target.Although the erroneous result occurred, there was no injury or death to patient.
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Search Alerts/Recalls
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