MAUDE Adverse Event Report: GENEOHM SCIENCES CANADA, INC. (BD DIAGNOSTICS) BD MAX¿ CTGCTV2 (US); MULTIPLE-TYPE SEXUALLY TRANSMITTED PATHOGEN NUCLEIC ACID IVD KIT

Catalog Number	443904
Medical Device Problem Code	False Positive Result (1227)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	10/17/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
D.2.Additional medical device types: mkz, ouy.A device evaluation is anticipated but has not yet begun.Upon completion of the investigation, a supplemental report will be filed.
Event or Problem Description
It was reported that during use of bd max¿ ctgctv2, a false positive chlamydia patient result was obtained.Original and recollected patient sample were then tested on max and both were chlamydia negative.There was no report of patient impact.
Additional Manufacturer Narrative
Investigation summary: the complaint investigation for discrepant results when using the bd ctgctv2 for bd max¿ system (ref.443904) kit lot: 5146893 was performed by the review of manufacturing records, review of customer¿s pictures and by the complaint¿s history review.Customer reported a discrepant result for the chlamydia trachomatis (ct) target: the initial test was positive, whereas repeat testing performed from the same sbt, from a new sampling, and from a repeat sbt of the new sampling all yielded negative results on three consecutive occasions.For the investigation, the customer provided the run files for bd max¿ instrument ct2629 (runs (b)(4) and identified the samples in positions b2 (run (b)(4); initial test), b5 (run (b)(4); test new sampling), b11 and b12 (run (b)(4); repeat from initial test and repeat from new sampling) as the samples associated with the discrepancy.The review of quality control records of the bd ctgctv2 for bd max¿ system lot: 5146893 revealed no anomalies that could explain the customer¿s discrepant results.Manual pcr curves adjudication was performed in the fam channel (ct target) for these four samples, and revealed no amplification for samples b5, b11 and b12, while late and low amplification was observed for sample b2.Such a low positive sample can occur due to bacterial titers in the specimen being at or near the limit of detection of the assay or through environmental or cross contamination introduced during the sample preparation at the customer¿s site.Nevertheless, manual curve adjudication has limitations; visual examination of pcr curves for low signal is a conservative assessment of the data.A strong positive result for the ct target was also observed in the same run as sample b2 (run (b)(4); position b1) which may be indicative of a cross contamination in the initial test.Nonetheless, customer provided environmental monitoring run#: (b)(4), which was negative for all samples.There is no indication of a reagent issue based on the analysis of the complaints received for discrepant results on bd ctgctv2 for bd max¿ system assay lot: 5146893.The root cause was not identified.However, specimens at or near the assay limit of detection (lod) or cross contamination could explain the customer¿s positive result in the initial test.Bd cannot confirm the complaint based on the investigation that was performed.Bd did not initiate a corrective and preventive action since no new hazard was identified.
Event or Problem Description
It was reported that during use of bd max¿ ctgctv2, a false positive chlamydia patient result was obtained.Original and recollected patient sample were then tested on max and both were chlamydia negative.There was no report of patient impact.

• Brand Name: BD MAX¿ CTGCTV2 (US)
• Common Device Name: MULTIPLE-TYPE SEXUALLY TRANSMITTED PATHOGEN NUCLEIC ACID IVD KIT
• Manufacturer (Section D): GENEOHM SCIENCES CANADA, INC. (BD DIAGNOSTICS); 2555 blv. du parc techn; quebec
• Manufacturer (Section G): GENEOHM SCIENCES CANADA, INC. (BD DIAGNOSTICS); 2555 blv. du parc techn; quebec
• Manufacturer Contact: matt j. connor ; 7 loveton circle; sparks, MD 21152 ; 4103164000
• MDR Report Key: 23546773
• Report Number: 3007420875-2025-00219
• Device Sequence Number: 15773837
• Product Code: LSL
• UDI-Device Identifier: 00382904439040
• UDI-Public: (01)00382904439040(17)261114(10)5146893
• Combination Product (Y/N): N
• Initial Reporter State: MA
• Initial Reporter Country: US
• PMA/510(K) Number: K182692
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other,User Facility
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 01/21/2026

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: Other
• Device Catalogue Number: 443904
• Device Lot Number: 5146893
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/21/2025
• Supplement Date Received by Manufacturer: 01/21/2026
• Initial Report FDA Received Date: 11/13/2025
• Supplement Report FDA Received Date: 01/26/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 05/26/2025
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Patient Sex: Unknown