MAUDE Adverse Event Report: ROCHE DIAGNOSTICS ELECSYS TOXO IGM; ENZYME LINKED IMMUNOABSORBENT ASSAY, TOXOPLASMA GONDII

Model Number	TOXO IGM
Medical Device Problem Code	False Positive Result (1227)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/28/2023
Type of Reportable Event	Malfunction
Event or Problem Description
The initial reporter received questionable elecsys toxo igm (toxo igm) results from an unspecified number of patient samples tested on the cobas 8000 - cobas e 602 module with serial number: (b)(6).The initial results were not reported outside of the laboratory.The reporter was not able to provide any patient results but stated that they have observed a higher frequency of borderline/reactive toxo igm results since using the reported reagent lot number.The reporter further stated that before using the reported reagent lot number, they would only send 0.44% of initially positive patient samples for confirmation.This number increased to 1.16% since using the reported reagent lot number (including potentially true positive patient samples).
Additional Manufacturer Narrative
The investigation is ongoing.
Additional Manufacturer Narrative
The patient samples were not available for investigation.Internal investigations have confirmed a decreased specificity for this reagent lot, still performing within the product specifications.The specificity is within the claimed range.The reagent performs within specification.The investigation did not identify a product problem.

• Brand Name: ELECSYS TOXO IGM
• Common Device Name: ENZYME LINKED IMMUNOABSORBENT ASSAY, TOXOPLASMA GONDII
• Manufacturer (Section D): ROCHE DIAGNOSTICS; 9115 hague road; indianapolis IN 46250 0457
• Manufacturer (Section G): ROCHE DIAGNOSTICS GMBH; sandhoferstrasse 116; na; mannheim (baden-wurttemberg) 68305 ; GM 68305
• Manufacturer Contact: amy nelson ; 9115 hague road; na; indianapolis, IN 46250 ; 3174767531
• MDR Report Key: 16809431
• Report Number: 1823260-2023-01397
• Device Sequence Number: 3063931
• Product Code: LGD
• UDI-Device Identifier: 04015630921485
• UDI-Public: 04015630921485
• Combination Product (Y/N): N
• Initial Reporter Country: FR
• PMA/510(K) Number: K162678
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 05/17/2023

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: 10/31/2023
• Device Model Number: TOXO IGM
• Device Catalogue Number: 04618858190
• Device Lot Number: 67194900
• 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: 03/28/2023
• Supplement Date Received by Manufacturer: 04/28/2023
• Initial Report FDA Received Date: 04/25/2023
• Supplement Report FDA Received Date: 05/17/2023
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• 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