MAUDE Adverse Event Report: SIEMENS HEALTHCARE DIAGNOSTICS INC ADVIA CENTAUR CA 19-9; SYSTEM, TEST, CA19-9, FOR MONITORING AND MANAGEMENT OF PANCREATIC CANCER

Model Number	N/A
Medical Device Problem Code	High Test Results (2457)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/18/2024
Type of Reportable Event	Malfunction
Event or Problem Description
The customer reports observation of elevated ca 19-9 results with lot 535 which are discordant relative to repeat testing with lot 530.The customer identified a positive shift in ca 19-9 results after switching to a new lot of reagent, and re-tested patient samples using lot 530 which had been initially tested using lot 535.Lower results obtained using lot 530 were considered correct and reported to physicians.There are no known reports of patient intervention or adverse health consequences due to the elevated ca 19-9 results.
Additional Manufacturer Narrative
A customer from outside the united states reported observation of elevated ca 19-9 results with lot 535 which are discordant relative to repeat testing with lot 530.The customer indicates a shift in patient results since changing from ca 19-9 lot 530 to lot 535; the same positive shift is not observed in quality control (qc) results.Repeatability of patient-sample pools has not been a problem.The same observation is made on all three advia centaur systems in the customer¿s lab.Siemens is investigating.
Additional Manufacturer Narrative
A customer from outside the united states reported observation of elevated advia centaur ca 19-9 results which were discordant relative to repeat testing.Siemens investigation confirmed an average positive bias of 56.4% with a sample population from the asia pacific region and atellica im and advia centaur 19-9 assay kit lots ending in 535 as compared to previous lots.However, investigation did not confirm the complaint allegations of commercial quality control results outside of range.Urgent medical device correction (umdc) aimc 24-14.A.Us and urgent field safety notice (ufsn) aimc 24-14.A.Ous will be distributed to customers who have received the affected product to notify them of the bias.The communication will advise customers to discontinue use of the affected product.

• Brand Name: ADVIA CENTAUR CA 19-9
• Common Device Name: SYSTEM, TEST, CA19-9, FOR MONITORING AND MANAGEMENT OF PANCREATIC CANCER
• Manufacturer (Section D): SIEMENS HEALTHCARE DIAGNOSTICS INC; 511 benedict ave; tarrytown NY 10591
• Manufacturer (Section G): SIEMENS HEALTHCARE DIAGNOSTICS INC; 333 coney st.; registration# 1219913; east walpole MA 02032
• Manufacturer Contact: barry memishian ; 333 coney st.; east walpole, MA 02032 ; 5082985306
• MDR Report Key: 19340690
• Report Number: 1219913-2024-00316
• Device Sequence Number: 20618794
• Product Code: NIG
• UDI-Device Identifier: 00630414574028
• UDI-Public: 00630414574028
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K031393
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Remedial Action: Recall
• Type of Report: Initial,Followup
• Report Date (Section B): 08/16/2024

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 Expiration Date: 09/14/2024
• Device Model Number: N/A
• Device Catalogue Number: 10491244
• Device Lot Number: 535
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 04/22/2024
• Supplement Date Received by Manufacturer: 07/19/2024
• Initial Report FDA Received Date: 05/17/2024
• Supplement Report FDA Received Date: 08/21/2024
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 11/14/2023
• 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: Initial
• If action reported to FDA under 21 USC 360i(g), list FDA-assigned Recall Number or include a statement: 1219913-07-18-2024-002-C
• Patient Sequence Number: 1
• Patient Sex: Unknown