MAUDE Adverse Event Report: GENMARK DIAGNOSTICS, INC. EPLEX BLOOD CULTURE IDENTIFICATION PANEL - GRAM POSITIVE (BCID-GP) PANEL; GRAM-POSITIVE BACTERIA AND THEIR RESISTANCE MARKERS

Catalog Number	09556508001
Medical Device Problem Code	False Negative Result (1225)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/23/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The eplex base analyzer serial number was (b)(6).The investigation did not identify a specific cause of the event.The issue was consistent with a lower than intended target concentration within the sample volume analyzed by the assay.This lot contains a raw material that has been identified as having potential for leaks.No leaks were observed, however small amounts of reagent may not be visible.This issue could not be excluded by the investigation.The issue is also consistent with a low target concentration withdrawn and loaded into the delivery port.This can create limit of detection challenges if the concentration is at or near the analytical sensitivity of the assay.There is an inherent risk of false negative results due to the innate nature of microbes.Variations within the intended test target can cause challenges with amplification and subsequent generation of electrochemical signals.
Event or Problem Description
There was an allegation of questionable eplex blood culture identification panel - gram positive (bcid-gp) panel results for 1 patient on an eplex system.It was reported that the staphylococcus aureus target was detected in culture, but the bcid-gp test result was negative for the staphylococcus aureus target.No repeat testing was performed.

• Brand Name: EPLEX BLOOD CULTURE IDENTIFICATION PANEL - GRAM POSITIVE (BCID-GP) PANEL
• Common Device Name: GRAM-POSITIVE BACTERIA AND THEIR RESISTANCE MARKERS
• Manufacturer (Section D): GENMARK DIAGNOSTICS, INC.; 5964 la place ct, suite 100; carlsbad CA 92008
• Manufacturer (Section G): GENMARK DIAGNOSTICS, INC.; 5964 la place ct, suite 100; carlsbad CA 92008
• Manufacturer Contact: alan maderazo ; 5964 la place ct, suite 100; carlsbad, CA 92008
• MDR Report Key: 21721891
• Report Number: 3008632402-2025-00934
• Device Sequence Number: 11694619
• Product Code: PAM
• UDI-Device Identifier: 00857167005320
• UDI-Public: 00857167005320
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: K181663
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial
• Report Date (Section B): 03/28/2025

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: 03/22/2026
• Device Catalogue Number: 09556508001
• Device Lot Number: 10235363
• Was Device Available for Evaluation?: Yes
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 03/05/2025
• Initial Report FDA Received Date: 03/28/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• 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
• Patient Sequence Number: 1
• Patient Sex: Unknown