MAUDE Adverse Event Report: ROCHE DIAGNOSTICS CA 19-9 ELECSYS E2G; CARBOHYDRATE ANTIGEN (CA19-9) TEST SYSTEM

Model Number	CA 19-9 ELECSYS E2G
Medical Device Problem Codes	High Test Results (2457); Non Reproducible Results (4029)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/10/2022
Type of Reportable Event	Malfunction
Event or Problem Description
The initial reporter complained of a discrepant high result for 1 patient sample tested for ca 19-9 elecsys e2g (ca 19-9) on a cobas e801 module.The initial result was 113 u/ml.This result was reported outside of the laboratory.On (b)(6) 2022 the sample was repeated with a result of 9.91 u/ml.On (b)(6) 2022 the sample was repeated with a result of 8.99 u/ml.The repeat results were believed to be correct and were provided to the doctor.The e801 module serial number was (b)(4).
Additional Manufacturer Narrative
The customer repeated 5 other patient samples that were initially run on (b)(6) 2022 and the repeat results corresponded to the initial results.The investigation determined that there was reagent contamination, which occurred during the filling process of the elecsys ca 19-9 reagent cassettes lot number 50474301 for the cobas e 801 module only.The issue is related to contamination of the reagent with magnetic particles.A replacement lot is not currently available.Roche has provided two workaround options to customers.The first workaround is customers may discontinue running the elecsys ca 19-9 assay on the e801 and instead run the ca 19-9 assay on the cobas e 411 analyzer, cobas e 601 and 602 modules, or the modular analytics e 170 module.The second workaround is customers can continue to run the ca 19-9 assay on the e801 and repeat all results =37 u/ml within 2 hours.Instructions for implementing these workarounds were communicated to customers by customer notification.

• Brand Name: CA 19-9 ELECSYS E2G
• Common Device Name: CARBOHYDRATE ANTIGEN (CA19-9) TEST SYSTEM
• Manufacturer (Section D): ROCHE DIAGNOSTICS; 9115 hague road; indianapolis IN 46250 0457
• Manufacturer (Section G): ROCHE DIAGNOSTICS GMBH; sandhoferstrasse 116; na; mannheim (baden-wurttemberg) 68305 ; GM 68305
• Manufacturer Contact: michael leslie ; 9115 hague road; na; indianapolis, IN 46250 ; 3175214343
• MDR Report Key: 13693018
• Report Number: 1823260-2022-00614
• Device Sequence Number: 4931120
• Product Code: NIG
• UDI-Device Identifier: 04015630939640
• UDI-Public: 04015630939640
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: K050231
• 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
• Report Date (Section B): 03/08/2022

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: 04/30/2022
• Device Model Number: CA 19-9 ELECSYS E2G
• Device Catalogue Number: 07027028190
• Device Lot Number: 50474301
• 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: 02/12/2022
• Initial Report FDA Received Date: 03/08/2022
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• 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
• If action reported to FDA under 21 USC 360i(g), list FDA-assigned Recall Number or include a statement: RES 84915
• Patient Sequence Number: 1
• Patient Age: 55 YR
• Patient Sex: Male