MAUDE Adverse Event Report: BECKMAN COULTER, INC. DXC 500 AU CHEMISTRY ANALYZER; ANALYZER, CHEMISTRY (PHOTOMETRIC, DISCRETE), FOR CLINICAL USE

Model Number	DXC 500 AU CLINICAL CHEMISTRY ANALYZER WITH ISE JP
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	11/05/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Beckman coulter field service engineer (fse) evaluated the dxc 500 au chemistry analyzer and identified the probable cause as defective ise electrodes.The fse replaced the sodium and chloride electrodes to resolve the issue.Section a2, a3, a4, a5 and a6: information not provided by customer.The beckman coulter internal identifier is (b)(4).
Event or Problem Description
The customer reported obtaining erratic ion selective electrode (ise) results, including sodium (na), and chloride (cl), on patient samples run on the dxc 500 au chemistry analyzer.There was no report of change to treatment, injury, or death associated with event.The customer did not provide patient demographics and data of the erroneous results have not been provided for review.

• Brand Name: DXC 500 AU CHEMISTRY ANALYZER
• Common Device Name: ANALYZER, CHEMISTRY (PHOTOMETRIC, DISCRETE), FOR CLINICAL USE
• Manufacturer (Section D): BECKMAN COULTER, INC.; 250 s. kraemer blvd.; brea CA 92821
• Manufacturer (Section G): BECKMAN COULTER MISHIMA K.K.; 454-32 higashino; nagaizumi-cho sunto-gun; schizuoka JP-NO TA 4; JA JP-NOTA 41
• Manufacturer Contact: shama agtey ; 1000 lake hazeltine drive; chaska 55318 ; 9524916938
• MDR Report Key: 23707046
• Report Number: 9612296-2025-01025
• Device Sequence Number: 10595493
• Product Code: JJE
• UDI-Device Identifier: 14987666545065
• UDI-Public: (01)14987666545065(11)250614
• Combination Product (Y/N): N
• Initial Reporter State: WY
• Initial Reporter Country: US
• PMA/510(K) Number: K220977
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 12/03/2025

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: Health Professional
• Device Model Number: DXC 500 AU CLINICAL CHEMISTRY ANALYZER WITH ISE JP
• Device Catalogue Number: C63520
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 11/05/2025
• Initial Report FDA Received Date: 12/03/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 06/14/2025
• 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
• Usage of Device: Unknown
• Patient Sequence Number: 1
• Patient Sex: Unknown