| Catalog Number |
06P02-60 |
| 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 |
12/31/2023
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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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The san antonio eye bank (saeb) reported that its statistics for 2023 showed an increase of reactive hbsag results for cadaveric (non-heart beating) samples that appears to coincide with the implementation/validation of the alinity s system in late 2021 at qualtex laboratories (san antonio eye bank utilizes qualtex laboratories for testing of their hbsag cadaveric samples).In 2021 there were 3.0% hbsag reactive samples (73 corneas) and in 2023 there were 7.3% hbsag reactive samples (153 corneas).For 2023, 0.002% of these were both hbsag and hbv nat reactive (4 corneas) and 0.0019% (6 corneas) total were hbv nat reactive.No impact to patient/donor management was reported.
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Additional Manufacturer Narrative
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An evaluation is in process.A follow-up report will be submitted when the evaluation is complete.All available patient information was included.Additional patient details are not available.
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Event or Problem Description
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The san antonio eye bank (saeb) reported that its statistics for 2023 showed an increase of reactive hbsag results for cadaveric (non-heart beating) samples that appears to coincide with the implementation/validation of the alinity s system in late 2021 at qualtex laboratories (san antonio eye bank utilizes qualtex laboratories for testing of their hbsag cadaveric samples).In 2021 there were 3.0% hbsag reactive samples (73 corneas) and in 2023 there were 7.3% hbsag reactive samples (153 corneas).For 2023, 0.002% of these were both hbsag and hbv nat reactive (4 corneas) and 0.0019% (6 corneas) total were hbv nat reactive.No impact to patient/donor management was reported.
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Additional Manufacturer Narrative
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The complaint investigation included a review of data and information provided, a search for similar complaints, ticket trending review, device history record review, labeling review, and field data review.Return testing was not completed as returns were not available.Data and information provided were reviewed and support the complaint issue without indication for any additional issue.A search for similar complaints did not identify an increase in complaint activity.Ticket trending review did not identify any trends for the issue for the product.Device history record review did not identify any non-conformances with list number 06p02-60 and the complaint issue.Labeling was reviewed and adequately addresses the issue under review.A technical review of customer release test data and statistical process control charts for alinity s 6p02-60 reagent lots was performed.No issues were identified during review of customer release testing and there were no issues identified regarding the performance of hbsag lots manufactured over the time frame.A review of field data for alinity s hbsag was performed.Alinity s hbsag list number 6p02-60 lots across the transplant peer group and across a whole blood and plasma screening monitoring group were collected and assessed.Across the whole blood and plasma monitoring group, the performance of all list number 6p02-60 tested lots is within product requirements.Within the transplant peer group, the specificity performance of all list number 6p02-60 lots with greater than 55 test points are within the package insert representative data confidence interval for cadaveric specimens.At qualtex laboratories (usa), the specificity performance of ln 6p02-60 lots for cadaveric testing is generally lower compared to the transplant peer group and demonstrates variability for the timeframe evaluated.However, a further review supports the assay is overall performing as expected while also indicating site specific influences may be contributing to the cadaveric specificity performance at the qualtex laboratories (usa) site.Donor demographics (older age) and comorbidities, as well as sample integrity have been identified as contributing factors for false reactive results associated with cadaveric testing on the alinity s system.Customer education to highlight the importance of pre-analytics to optimize sample integrity were carried out.Based on the information within the complaint record, no systemic issue or deficiency with the alinity s hbsag reagent was identified.
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Search Alerts/Recalls
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