MAUDE Adverse Event Report: ROCHE DIAGNOSTICS COBAS 6000 C (501) MODULE; CLINICAL CHEMISTRY ANALYZER

Catalog Number	05860636001
Medical Device Problem Code	High Test Results (2457)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	05/07/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The reagent lot number was 879779.The expiration date was not provided.The investigation is ongoing.
Event or Problem Description
There was an allegation of calibration and qc issues as well as questionable results for patient samples for the online tdm vancomycin gen.3 assay on the cobas 6000 c 501 analyzer.One example was an initial result of 20.5 ¿g/ml, and a repeat result of 12.6 ¿g/ml from another cobas c501 analyzer.The repeat result was believed to be correct.

• Brand Name: COBAS 6000 C (501) MODULE
• Common Device Name: CLINICAL CHEMISTRY ANALYZER
• Manufacturer (Section D): ROCHE DIAGNOSTICS; 9115 hague road; indianapolis IN 46250 0457
• Manufacturer (Section G): HITACHI HIGH TECH CORP.; 882 ichige hitachinaka; ibaraki 312-8 504; JA 312-8504
• Manufacturer Contact: natalie catton ; 9115 hague road; indianapolis, IN 46250
• MDR Report Key: 25304224
• Report Number: 1823260-2026-02091
• Device Sequence Number: 15832139
• Product Code: JJE
• UDI-Device Identifier: 04015630924707
• UDI-Public: 04015630924707
• Combination Product (Y/N): N
• Initial Reporter State: TX
• Initial Reporter Country: US
• PMA/510(K) Number: K060373
• 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): 06/18/2026

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 Catalogue Number: 05860636001
• 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: 05/07/2026
• Supplement Date Received by Manufacturer: 06/02/2026
• Initial Report FDA Received Date: 05/27/2026
• Supplement Report FDA Received Date: 06/18/2026
• 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