MAUDE Adverse Event Report: ABBOTT MOLECULAR, INC. ALINITY M RESP-4-PLEX AMP KIT; REAGENTS, 2019-NOVEL CORONAVIRUS NUCLEIC ACID

Catalog Number	09N79-096
Medical Device Problem Code	False Positive Result (1227)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	07/29/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
An investigation is in process.A follow-up report will be submitted when the investigation is complete.Additional mdrs submitted for additional run dates: 3005248192-2025-00299 3005248192-2025-00301 3005248192-2025-00302 3005248192-2025-00303.
Event or Problem Description
The customer reported 5 false positive results on the rsv target while using the alinity m resp-4-plex amp kit.The following 5 sample ids (sids) showed a weak positive rsv result and generated a negative result on repeat: (b)(6).Customer performed environmental testing.Customer used wet swabs to collect samples from instrument touch points, centrifuge, benches, pipettes, hoods, vortexes, and sample processing area sink.All samples were negative.Technical application specialist (tas) reviewed result history for the prior 30 days.No reactive negative quality control (qc) samples are present.Only 1 internal control error was present.5 cellular control errors were present.5 pipetting errors were present.Overall completion rate for the prior 30 days is 97.2%.Between 6/6/2025 - 07/06/2025 2 positive rsv results were present out of 201 samples indicating a 1.0% positivity rate, with all cycle numbers (cn) <25.Between 7/7/2025 - 08/07/2025 5 positive rsv results were present out of 240 samples indicating a 2.1% positivity rate, with all cn >39.False positive results were not reported outside of the laboratory.There was no report of impact to patient management.
Additional Manufacturer Narrative
Investigation into this complaint included file sample testing, customer data review, quality data review and a complaint history review.The results of the investigation are summarized as follows: retain / file sample evaluation: the file sample evaluation for the alinity m resp-4-plex amp kit (list 09n79-096) lot 414376 was performed.The file sample evaluation met all validity and acceptance criteria.All replicates were processed successfully as there were no error codes or flags present.All replicates were interpreted correctly by the assay software.The results for the parameters being evaluated were within the lower specification limit (lsl) and the upper specification limit (usl).Moreover, there were no instances of false positive results or reactive negative controls; therefore, the file sample evaluation for lot 414376 met the acceptance and validity criteria that was established and received a disposition of pass.Customer data review: no positive test data for sample id (sid) (b)(6) was located in the attached logs.Therefore, this sample was not reviewed.The available customer data was reviewed.The assay met specification requirements as no error codes or flags were displayed for the run controls.The amplification curves appeared delayed for the rsv analyte for the four (4) reported samples reviewed as the cycle threshold (ct) values (41.4, 39.85, 41.22, 41.74) were near the ct cutoff (42.0) indicating weak positive samples.Quality data review: device history record (dhr) review.Review of the manufacturing packet for alinity m resp-4-plex amp kit (list 09n79-096) lot 414376 did not identify any issues that could result in the reported complaint.The quality control (qc) amp kit masterlot testing for alinity m resp-4-plex amp kit (list 09n79-096) lot 414376 (including components) met all validity and acceptance criteria.No issues related to the reported complaint were found during qc testing.Capa / non-conformance review: a lot specific capa search was performed to identify related existing internal quality records to the reported complaint during production or internal use.The capa review did not identify any existing internal records or nonconformances related to the reported complaint.A part specific keyword search report was also performed for part 9n79 to identify any existing internal quality records that could result in the reported complaint during production or internal use records that were related to the reported complaint and part.No other records were deemed relevant to this complaint investigation.Complaint history review a lot specific complaint history review was performed to identify any similar complaints to the case being investigated, which reported discrepant false positive results for the rsv analyte while using alinity m resp-4-plex amp kit (list 09n79-096) lot 414376.Complaint trending was also reviewed.A trend violation was not identified as the upper control limit was not exceeded for product 9n79 (base list part number).No new adverse trend was identified.Based on the results of the investigation elements, a product deficiency for alinity m resp-4-plex amp kit (list 09n79-096) lot 414376 was not identified.

• Brand Name: ALINITY M RESP-4-PLEX AMP KIT
• Common Device Name: REAGENTS, 2019-NOVEL CORONAVIRUS NUCLEIC ACID
• Manufacturer (Section D): ABBOTT MOLECULAR, INC.; 1300 e. touhy ave.; des plaines IL 60018 3315
• Manufacturer (Section G): ABBOTT MOLECULAR, INC.; 1300 e. touhy ave.; des plaines 60018 3315
• Manufacturer Contact: albert chianello ; 1300 e. touhy ave.; des plaines 60018-3315 ; 2242064064
• MDR Report Key: 22926207
• Report Number: 3005248192-2025-00300
• Device Sequence Number: 18730418
• Product Code: QJR
• UDI-Device Identifier: 00884999049390
• UDI-Public: (01)00884999049390(10)414376(17)260227(240)09N79-096
• Combination Product (Y/N): N
• Initial Reporter State: VA
• Initial Reporter Country: US
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 11/21/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Expiration Date: 02/27/2026
• Device Catalogue Number: 09N79-096
• Device Lot Number: 414376
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/07/2025
• Supplement Date Received by Manufacturer: 11/18/2025
• Initial Report FDA Received Date: 08/29/2025
• Supplement Report FDA Received Date: 11/21/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 03/03/2025
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Patient Sex: Unknown