MAUDE Adverse Event Report: Roche Diagnostics cobas 6000 c501 module; CLINICAL CHEMISTRY ANALYZER

Catalog Number	04745914001
Medical Device Problem Code	Incorrect, Inadequate or Imprecise Result or Readings (1535)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/11/2026
Type of Reportable Event	Malfunction
Event or Problem Description
There was an allegation of questionable test results for 3 patient samples on a cobas 6000 c501 module.The affected assays are uric acid, calcium, and glucose.Sample 1: the initial uric acid result was 0.4 mg/dl, and the repeated result was 4.3 mg/dl.Sample 2: the initial calcium result was 4 mg/dl, and the repeated result was 6 mg/dl.Sample 3: the initial glucose result was 70 mg/dl, and the repeated result was 125 mg/dl.The samples were repeated because the initial results did not match the clinical status of the patients.The repeated results were obtained on another module and were believed to be correct.
Additional Manufacturer Narrative
The uric acid reagent lot number is 943167.The calcium reagent lot number is 882379.The glucose reagent lot number is 936950.The expiration dates were not provided.The field service representative found a blockage in the rinse tubing.He replaced the rinse tubing, which resolved the issue.The investigation determined that the service actions resolved the issue.

• Brand Name: cobas 6000 c501 module
• Common Device Name: CLINICAL CHEMISTRY ANALYZER
• Manufacturer (Section D): Roche Diagnostics; 9115 hague road; indianapolis IN 46250 -045
• 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: 50672507
• Report Number: 1823260-2026-03661
• Device Sequence Number: 13079574
• Product Code: JJE
• UDI-Device Identifier: 04015630924707
• UDI-Public: 04015630924707
• Combination Product (Y/N): N
• Initial Reporter Country: TU
• PMA/510(K) Number: K060373
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 09/08/2026

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: 04745914001
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Initial Date Received by Manufacturer: 08/11/2026
• Initial Report FDA Received Date: 09/08/2026
• 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