MAUDE Adverse Event Report: SIEMENS HEALTHCARE DIAGNOSTICS INC - GLASGOW DIMENSION VISTA®; DIMENSION VISTA® FT3 FREE TRIIODOTHYRONINE FLEX® REAGENT CARTRIDGE

Catalog Number	K6416 SMN 10445106
Medical Device Problem Code	High Test Results (2457)
Health Effect - Clinical Code	No Known Impact Or Consequence To Patient (2692)
Date of Event	05/31/2017
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The customer contacted siemens healthcare diagnostics concerning the impact of biotin on the ft3 result on a patient being treated with quizenday biotin.The cause for the discordant elevated ft3 result is unknown.Siemens is investigating the incident.
Event or Problem Description
A discordant elevated free triiodothyronine (ft3) result was obtained on a patient sample on the dimension vista 500 system.The result was not reported to the physician.The same patient sample was tested at an alternate facility with an alternate methodology and a lower result was obtained.There are no reports of patient intervention or adverse health consequences as a result of the discordant elevated ft3 result.
Additional Manufacturer Narrative
The original mdr was filed 6/26/2017.In the course of the investigation, data was collected for biotin interference on dimension vista ft3 as follows: test level: 5.5, units: pg/ml, biotin test level and % interference observed, 1200 ng/ml, 500 ng/ml, 250 ng/ml 110.8%, 100 ng/ml 18.8%.Results for samples with 1200 ng/ml and 500 ng/ml biotin are above the analytical measurement range and percentage increase could not be calculated.The siemens investigation is continuing.
Additional Manufacturer Narrative
Original mdr 2517506-2017-00557 was filed 6/26/2017.2517506-2017-00557 supplement 1 was filed 8/24/2017.Siemens healthcare diagnostics concluded the investigation of potential interference of biotin on dimension vista ft3 results.The instructions for use for the dimension vista ft3 flex reagent cartridge has been revised to include in the limitations of procedure section the following statement: "specimens that contain biotin at a concentration of 50 ng/ml demonstrate a less than or equal to 10% change in results.Biotin concentrations greater than this may lead to falsely elevated results for patient samples.Results from patients taking biotin supplements or receiving high-dose biotin therapy should be interpreted with caution due to possible interference with this test.".

• Brand Name: DIMENSION VISTA®
• Common Device Name: DIMENSION VISTA® FT3 FREE TRIIODOTHYRONINE FLEX® REAGENT CARTRIDGE
• Manufacturer (Section D): SIEMENS HEALTHCARE DIAGNOSTICS INC - GLASGOW; glasgow business community; 500 gbc drive po box 6101; newark DE 19714 6101
• MDR Report Key: 6667048
• Report Number: 2517506-2017-00557
• Device Sequence Number: 19325583
• Product Code: CDP
• UDI-Device Identifier: 00842768015199
• UDI-Public: 00842768015199
• Combination Product (Y/N): N
• Initial Reporter Country: FR
• PMA/510(K) Number: EXEMPT
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: foreign,health professional,u
• Initial Reporter Occupation: Health Professional
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 01/26/2018

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: 01/18/2018
• Device Catalogue Number: K6416 SMN 10445106
• Device Lot Number: 17018BA
• Was Device Available for Evaluation?: No
• Was the Report Sent to FDA?: No
• Initial Date Received by Manufacturer: 06/02/2017
• Supplement Date Received by Manufacturer: 07/28/2017; 01/04/2018
• Initial Report FDA Received Date: 06/26/2017
• Supplement Report FDA Received Date: 08/24/2017; 01/26/2018
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Patient Age: 41 YR