MAUDE Adverse Event Report: ROCHE DIAGNOSTICS ELECSYS FT4 III; RADIOIMMUNOASSAY, FREE THYROXINE

Catalog Number 07976836190

Device Problem High Test Results (2457)

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

Event Date 08/22/2023

Event Type  malfunction  

Manufacturer Narrative

The serial number of the customer's cobas 6000 e601 module is (b)(6).The patient sample was received for investigation.The investigation is ongoing.

Event Description

The initial reporter received questionable elecsys ft4 iii and ft3 iii assay results from one patient sample tested on the cobas 6000 e601 module.This medwatch is for the ft4 iii assay.Please refer to a1.Patient identifier (b)(6) for the ft3 iii assay.The initial result was not reported outside of the laboratory.The reporter stated that their laboratory supervisor deemed the results reported by roche cobas e601 did not meet clinical expectations and were unexplainable.They considered that there was an interference in the ft3 & ft4 electrochemiluminescence immunoassays (eclia) that led to the elevated results.The patient sample was sent to two other laboratories: laboratory 1, which uses a beckman dxi 800 analyzer and laboratory 2, which uses an abbott architect.Please refer to the attachment pt-0063963 in the medwatch for the table containing the questionable results.

Manufacturer Narrative

The investigation analyzed the patient sample for the presence of interference.The investigation confirmed that the presence of a streptavidin interfering factor in the patient sample led to the elevated elecsys ft3 iii and ft4 iii results.Product labeling states "in rare cases, interference due to extremely high titers of antibodies to analyte-specific antibodies, streptavidin or ruthenium can occur.These effects are minimized by suitable test design.For diagnostic purposes, the results should always be assessed in conjunction with the patient¿s medical history, clinical examination, and other findings.".

• Brand Name: ELECSYS FT4 III
• Type of Device: RADIOIMMUNOASSAY, FREE THYROXINE
• 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: 17806483
• MDR Text Key: 324109702
• Report Number: 1823260-2023-03075
• Device Sequence Number: 1
• Product Code: CEC
• Combination Product (y/n): Y
• Reporter Country Code: CH
• PMA/PMN Number: K131244
• 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: 11/17/2023

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: 07976836190
• Device Lot Number: 67527903
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: 08/29/2023
• Initial Date FDA Received: 09/25/2023
• Supplement Dates Manufacturer Received: 10/25/2023
• Supplement Dates FDA Received: 11/17/2023
• 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
• Treatment: METHYL COBALAMIN; METOPROLOL TARTRATE
• Patient Age: 44 YR
• Patient Sex: Female