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ABBOTT GMBH ALINITY S HIV AG/AB COMBO REAGENT KIT; HUMAN IMMUNODEFICIENCY VIRUS TYPES 1 AND 2 AG, AB (P24) AND SYNTHETIC PEPTIDES
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| Catalog Number |
06P01-60 |
| 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 |
12/20/2023
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Type of Reportable Event
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Malfunction
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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.Section a1 - patient identifier complete entry = sample id (b)(6) and sample id (b)(6).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 customer observed false reactive alinity s hiv ag/ab combo results for a 16-year-old female donor.The following data was provided (<1.00 s/co is nonreactive, >/=1.00 s/co is reactive): sample id (b)(6) initial result, on (b)(6) 2023, was 1.99, repeat results were 1.32 and 1.34 s/co.The sample was confirmed positive on the geenius platform on (b)(6) 2023.The sample was negative with hivnt.The sample was sent out for testing on the grifols platform and the hivnt was negative and the geenius testing was weak and resulted as hiv-1 positive (hiv-1ab reactive/hiv-2 indeterminate).The western blot results showed gp36, gp160, and p24 absent but gp140, p31, gp41, and ctrl were present.The donor was redrawn on (b)(6) 2024, under sample id (b)(6), initial result, tested on (b)(6) 2024, was 1.04, repeat results were 0.97 and 0.96 s/co.The nat was negative.There was no impact to patient or donor management reported.
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Additional Manufacturer Narrative
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The complaint investigation for false reactive alinity s hiv ag/ab combo results included a review of data and information provided by the customer, search for similar complaints, ticket trending review, labeling review, device history record review, and field data review.Trending review determined no related trend for the issue and the product.Return testing was not completed as returns were not available.Device history record review did not identify any non-conformances or deviations with the likely cause lot number, 53198be00, and complaint issue.The overall reactive rates of list number 06p01-60, lot number 53198be00, at versiti indiana (usa), applicable peer sites, and across a whole blood and plasma screening monitoring group were collected and assessed.Across the whole blood and plasma monitoring group, the initial reactive rate (irr), repeat reactive rate (rrr), and specificity (assuming zero prevalence) observed for lot 53198be00 at the customer site and their peer sites is within product requirements and comparable to other lots analyzed in the comparison.At the customer of interest, the complaint lot performs better than at peer sites and comparably to earlier and later lots used at the site.The whole blood and plasma monitoring group: irr: 0.020 %, rrr: 0.013 %, irr - rrr 0.007 %, specificity: 99.987 %, versiti indiana (usa): irr: 0.051 %, rrr: 0.029 %, irr - rrr 0.022 %, specificity: 99.971 %, and peer sites: irr: 0.069 %, rrr: 0.042 %, irr - rrr 0.026 %, specificity: 99.958 %.Labeling was reviewed and sufficiently addresses the customer's issue.Based on the information provided and abbott diagnostics¿ complaint investigation, alinity s hbsag, lot number 53198be00, is performing as intended and no systemic issue or deficiency was identified.Section b5 - additional information provided by the customer for sample id (b)(6) drawn on (b)(6) 2024 was updated to sample id (b)(6).
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Event or Problem Description
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The customer observed false reactive alinity s hiv ag/ab combo results for a 16-year-old female donor.The following data was provided (<1.00 s/co is nonreactive, >/=1.00 s/co is reactive): sample id (b)(6) initial result, on (b)(6) 2023, was 1.99, repeat results were 1.32 and 1.34 s/co.The sample was confirmed positive on the geenuis platform on (b)(6) 2023.The sample was negative with hivnt.The sample was sent out for testing on the grifols platform and the hivnt was negative and the geenius testing was weak and resulted as hiv-1 positive (hiv-1ab reactive/hiv-2 indeterminate).The western blot results showed gp36, gp160, and p24 absent but gp140, p31, gp41, and ctrl were present.The donor was redrawn on (b)(6) 2024, under sample id (b)(6), initial result, tested on (b)(6) 2024, was 1.04, repeat results were 0.97 and 0.96 s/co.The nat was negative.There was no impact to patient or donor management reported.
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