MAUDE Adverse Event Report: ROCHE DIAGNOSTICS COAGUCHEK ® XS SYSTEM; PROTHROMBIN TIME MONITOR

Catalog Number	03666794001
Medical Device Problem Code	Image Display Error/Artifact (1304)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/02/2025
Type of Reportable Event	Malfunction
Event or Problem Description
The customer's coaguchek xs meter serial number (b)(6) had a display issue impacting the results field.The customer reports the meter display is faded and led to them misinterpreting a result.On (b)(6) 2025, the customer tested and reported a result of 2.6 inr.The display was faded at the time of the test.The customer had no therapy changes based on the result.There was no allegation of an adverse event as a result of the display issue.
Additional Manufacturer Narrative
The meter was requested for investigation.The investigation is ongoing.Section e3: occupation is patient/consumer.
Additional Manufacturer Narrative
The meter was returned for investigation.The meter¿s circuit board was tested for damage or contamination and it was found the printed circuit board (pcb) was contaminated.The root cause is determined to be contamination of the contacts due to improper handling or maintenance by the customer.Medwatch fields d9 and h3 have been updated.

• Brand Name: COAGUCHEK ® XS SYSTEM
• Common Device Name: PROTHROMBIN TIME MONITOR
• 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: 22045777
• Report Number: 1823260-2025-01543
• Device Sequence Number: 8782060
• Product Code: GJS
• UDI-Device Identifier: 04015630945689
• UDI-Public: 04015630945689
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: K062925
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Consumer
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 07/01/2025

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: Lay User/Patient
• Device Catalogue Number: 03666794001
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 04/23/2025
• Supplement Date Received by Manufacturer: 07/01/2025
• Initial Report FDA Received Date: 05/19/2025
• Supplement Report FDA Received Date: 07/01/2025
• 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