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	Non Reproducible Results (4029)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/13/2026
Type of Reportable Event	Malfunction
Event or Problem Description
We received an allegation of a questionable lithium result for one patient sample tested on the cobas c 703 analytical unit.The initial result was 0.0182 mmol/l with a data flag.The repeat result was 0.350 mmol/l.The repeat result was 0.0191 mmol/l with a data flag.The repeat result was 0.0147 mmol/l with a data flag.The customer deemed the flagged results to be the true results.
Additional Manufacturer Narrative
The lithium reagent lot number is 938030.The expiration date was not provided.

• 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: 25092573
• Report Number: 1823260-2026-01755
• Device Sequence Number: 14722347
• Product Code: JJE
• UDI-Device Identifier: 07613336200544
• UDI-Public: 07613336200544
• Combination Product (Y/N): N
• Initial Reporter Country: FR
• 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): 06/04/2026

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: 04/13/2026
• Supplement Date Received by Manufacturer: 05/12/2026
• Initial Report FDA Received Date: 05/06/2026
• Supplement Report FDA Received Date: 06/04/2026
• 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 Age: 65 YR
• Patient Sex: Male