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

Catalog Number	04618858190
Medical Device Problem Codes	False Positive Result (1227); Non Reproducible Results (4029)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/02/2026
Type of Reportable Event	Malfunction
Event or Problem Description
There was an allegation of questionable elecsys toxo igm assay results for two patient samples tested on a cobas e 411 analyzer (rack system).Sample 1: the initial results were consistently positive.The sample was sent to the external service lab and tested on a liaison system, which yielded negative results.Sample 2: on (b)(6) 2026, the initial results were consistently positive.The sample was sent to the external service lab and tested on a liaison system, which yielded negative results.During the (b)(6) 2026 test, it was confirmed that the quality control was not performed.
Additional Manufacturer Narrative
The serial number of the analyzer is (b)(6).The investigation is ongoing.

• 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; sandhofer strasse 116; mannheim (baden-wurttemberg) 68305 ; GM 68305
• Manufacturer Contact: natalie catton ; 9115 hague road; indianapolis, IN 46250
• MDR Report Key: 25215569
• Report Number: 1823260-2026-01956
• Device Sequence Number: 9801417
• Product Code: LGD
• UDI-Device Identifier: 04015630921485
• UDI-Public: 04015630921485
• Combination Product (Y/N): N
• Initial Reporter Country: IT
• PMA/510(K) Number: K162678
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• 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): 06/24/2026

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: 08/31/2026
• Device Catalogue Number: 04618858190
• Device Lot Number: 91253801
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 04/27/2026
• Supplement Date Received by Manufacturer: 06/01/2026
• Initial Report FDA Received Date: 05/19/2026
• Supplement Report FDA Received Date: 06/24/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• 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