MAUDE Adverse Event Report: ROCHE DIAGNOSTICS COBAS C 703 ANALYTICAL UNIT; ANALYZER, CHEMISTRY (PHOTOMETRIC, DISCRETE), FOR CLINICAL USE

Model Number	C703
Medical Device Problem Code	Mechanical Problem (1384)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/07/2026
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The investigation determined the issue was consistent with a pre-analytical handling issue.The issue was resolved after the probe was cleaned.The investigation did not identify a product problem.
Additional Manufacturer Narrative
E1 initial reporter establishment name: (b)(6).The reagent lot numbers and expiration dates were not provided.The field service representative cleaned the sample needles and performed checks and tests with acceptable results.The investigation is ongoing.
Event or Problem Description
There was an allegation of discrepant albumin and calcium assay results for several patient samples on a cobas c 703 analytical unit.The following results were provided for each assay as an example: albumin: the initial result was 1.17 g/dl.The repeat result was 4.51 g/dl.Calcium: the initial result was 0.529 mmol/l.The repeat result was 2.28 mmol/l.

• Brand Name: COBAS C 703 ANALYTICAL UNIT
• Common Device Name: ANALYZER, CHEMISTRY (PHOTOMETRIC, DISCRETE), FOR CLINICAL USE
• 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: 25049687
• Report Number: 1823260-2026-01704
• Device Sequence Number: 10370228
• Product Code: JJE
• UDI-Device Identifier: 07613336200544
• UDI-Public: 07613336200544
• Combination Product (Y/N): N
• Initial Reporter Country: AU
• PMA/510(K) Number: K253490
• 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): 06/05/2026

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 Model Number: C703
• Device Catalogue Number: 09502971001
• 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: 04/08/2026
• Supplement Date Received by Manufacturer: 05/13/2026
• Initial Report FDA Received Date: 04/30/2026
• Supplement Report FDA Received Date: 06/05/2026
• 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