MAUDE Adverse Event Report: BECKMAN COULTER, INC. AU5800 CHEMISTRY ANALYZER; ANALYZER, CHEMISTRY (PHOTOMETRIC, DISCRETE), FOR CLINICAL USE

Model Number	AU5800-10 CHEMISTRY ANALYZER AU5800
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	01/17/2026
Type of Reportable Event	Malfunction
Event or Problem Description
The customer reported the generation of erratic sodium patient results and ion-selective electrolyte (ise) data controller error on their au5800 clinical chemistry analyzer.There was no report of change to treatment, injury, or death associated with event.The customer did not provide patient data or demographics.
Additional Manufacturer Narrative
Beckman coulter field service engineer (fse) evaluated the au5800 chemistry analyzer and observed spillage around the ise printed circuit board (pcb) which caused corrosion.The fse identified the probable cause as the ise pcb.The fse replaced the ise pcb to resolve the issue.No further issues were reported and the customer was informed of the investigation and satisfied.Section a2, a3, a4, a5 and a6: information not provided by customer.Section e1, initial reporter telephone number is (b)(6).The beckman coulter internal identifier is case-(b)(4).

• Brand Name: AU5800 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, MN 55318 ; 9524916938
• MDR Report Key: 24203412
• Report Number: 9612296-2026-00038
• Device Sequence Number: 13170610
• Product Code: JJE
• UDI-Device Identifier: 14987666543016
• UDI-Public: (01)14987666543016(11)221004
• Combination Product (Y/N): N
• Initial Reporter Country: EI
• PMA/510(K) Number: K112412
• 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): 01/28/2026

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: AU5800-10 CHEMISTRY ANALYZER AU5800
• 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: 01/17/2026
• Initial Report FDA Received Date: 01/28/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/04/2022
• 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