MAUDE Adverse Event Report: ROCHE DIAGNOSTICS ELECSYS TESTOSTERONE II ASSAY; TESTOSTERONE ASSAY

Model Number	TESTOSTERONE
Medical Device Problem Codes	Incorrect Measurement (1383); Low Test Results (2458); Non Reproducible Results (4029)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/21/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The analyzer's serial number is (b)(6).The investigation is ongoing.
Event or Problem Description
There was an allegation of questionable elecsys testosterone ii assay results for 1 patient sample on a cobas e 801 analytical unit.The initial result was <2.5 nmol/l.The physician questioned the result, and the sample was repeated.The repeated result was 6.24 nmol/l.The repeated result was believed to be correct.
Additional Manufacturer Narrative
The qc was acceptable.A general reagent issue was excluded.The field service representative performed checks and ensured the instrument was working as expected.The investigation did not identify a product problem.

• Brand Name: ELECSYS TESTOSTERONE II ASSAY
• Common Device Name: TESTOSTERONE ASSAY
• 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: 23808625
• Report Number: 1823260-2025-05112
• Device Sequence Number: 7596459
• Product Code: CDZ
• UDI-Device Identifier: 07613336170571
• UDI-Public: 07613336170571
• Combination Product (Y/N): N
• Initial Reporter State: NJ
• Initial Reporter Country: US
• PMA/510(K) Number: K211685
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 02/03/2026

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: 09/30/2026
• Device Model Number: TESTOSTERONE
• Device Catalogue Number: 08946370190
• Device Lot Number: 87206401
• 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: 11/21/2025
• Supplement Date Received by Manufacturer: 01/15/2026
• Initial Report FDA Received Date: 12/15/2025
• Supplement Report FDA Received Date: 02/03/2026
• 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