MAUDE Adverse Event Report: ROCHE DIAGNOSTICS ELECSYS FREE PSA; PROSTATE-SPECIFIC ANTIGEN (PSA) FOR MANAGEMENT OF PROSTATE CANCERS

Catalog Number 08828610190

Device Problem Incorrect Measurement (1383)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Date 09/28/2023

Event Type  malfunction  

Event Description

The initial reporter questioned a result for 1 patient sample tested for elecsys free psa (free psa) on a cobas e 801 analytical unit.The free psa result was 0.49 ug/l.The total psa result from the e801 analyzer was 0.07 ug/l.On (b)(6)2023 the total psa result from a competitor method was <0.10 ug/l.The customer suspects an interference.

Manufacturer Narrative

The e801 analyzer serial number was (b)(6).The competitor method was the abbott architect.

Manufacturer Narrative

The sample was received for investigation.The customer's results were confirmed during the investigation.The sample was further investigated and no interference was identified for the free psa assay.An interference affecting the total psa assay was identified.Product labeling for total psa states: "it is known that in rare cases psa isoforms do exist which may be measured differently by different psa tests.Findings of this kind have occasionally been reported for psa tests from various manufacturers.For diagnostic purposes, the results should always be assessed in conjunction with the patient¿s medical history, clinical examination and other findings." the presence of a seldom psa-isoform that cannot be completely detected by the usage of the standard total psa elecsys assay caused the low total psa result.The free psa result is considered to be correct.The investigation did not identify a product problem.

• Brand Name: ELECSYS FREE PSA
• Type of Device: PROSTATE-SPECIFIC ANTIGEN (PSA) FOR MANAGEMENT OF PROSTATE CANCERS
• 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: amy nelson ; 9115 hague road; indianapolis, IN 46250
• MDR Report Key: 18138874
• MDR Text Key: 328134304
• Report Number: 1823260-2023-03610
• Device Sequence Number: 1
• Product Code: LTJ
• UDI-Device Identifier: 07613336166628
• UDI-Public: 07613336166628
• Combination Product (y/n): Y
• Reporter Country Code: FR
• PMA/PMN Number: P000027
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Foreign,Health Professional,User Facility
• Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date: 12/20/2023

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
• Device Operator: Health Professional
• Device Catalogue Number: 08828610190
• Device Lot Number: ASKU
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: 10/19/2023
• Initial Date FDA Received: 11/15/2023
• Supplement Dates Manufacturer Received: 12/19/2023
• Supplement Dates FDA Received: 12/20/2023
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Is the Device Single Use?: No
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Sex: Male