Search Results

Copan Universal Transport Medium (UTM-RT) System is intended for the collection and transport of clinical specimen containing viruses, chlamydiae, mycoplasma or ureaplasma from the to the testing laboratory. UTM-RT can be processed using standard clinical laboratory operating procedures for viral, chlamydial, mycoplasma and ureaplasma culture.

UTM-RT is intended for the stabilization and transportation of an unprocessed upper respiratory clinical specimen suspected of containing respiratory viruses' nucleic acids. UTM-RT is intended for use with compatible molecular assays.

Copan Universal Transport Medium (UTM-RT®) System is composed of a tube with 3mL of UTM-RT® transport medium, which may be supplied in bulk or as a kit with a sterile specimen collection flocked swab. UTM-RT® medium is designed to maintain viability of viruses, chlamydiae, mycoplasma or ureaplasma during transport from the collection site to the testing laboratory for subsequent culture and to maintain the integrity of respiratory viruses' nucleic acids for testing with a compatible molecular assay.

The provided text is for a 510(k) premarket notification for a medical device called "Copan Universal Transport Medium (UTM-RT) System". This type of document describes the device, its intended use, and comparative performance data against a predicate device to demonstrate substantial equivalence, rather than a clinical trial or study in the traditional sense involving human readers or sophisticated AI algorithms.

Therefore, the requested information regarding "acceptance criteria" and "study that proves the device meets the acceptance criteria" in the context of an AI/machine learning device is not fully applicable here. This document focuses on the stability and preservation of viral nucleic acids in a transport medium.

However, I can extract the relevant "acceptance criteria" and "study" details as they pertain to the chemical and biological stability performance of the transport medium, which is the device in question.

Here's the breakdown of the information as it relates to the device's performance in preserving viral nucleic acids:

1. Table of Acceptance Criteria and Reported Device Performance

Ask a specific question about this device

The Cepheid Xpert Flu/RSV XC Assay is an automated, multiplex real-time, reverse transcriptase polymerase chain reaction (RT-PCR) assay intended for the in vitro qualitative detection and differentiation of influenza B, and respiratory syncytial virus (RSV) viral RNA. The Xpert Flu/RSV XC Assay uses nasopharyngeal swab and nasal aspirate/wash specimens collected from patients with signs and symptoms of respiratory infection. The Xpert Flu/RSV XC Assay is intended as an aid in the diagnosis of influenza and respiratory syncytial virus infections in conjunction with clinical and epidemiological risk factors.

Negative results do not preclude influenza virus or respiratory syncytial virus infection and should not be used as the sole basis for treatment or other patient management decisions.

Performance characteristics for influenza A were established during the 2013-2014 influenza season. When other novel influenza A viruses are emerging, performance characteristics may vary.

If infection with a novel influenza A virus is suspected based on current clinical and epidemiological screening criteria recommended by public health authorities, specimens should be collected with appropriate infection control precautions for novel virulent influenza viruses and sent to state or local health department for testing. Viral culture should not be attempted in these cases unless a BSL 3+ facility is available to receive and culture specimens.

The Xpert Flu/RSV XC Assay is a rapid, automated in vitro diagnostic test for qualitative detection and differentiation of influenza A. influenza B, and respiratory syncytial virus (RSV). The assay is performed on the Cepheid GeneXpert Instrument Systems (GeneXpert Dx systems and GeneXpert Infinity Systems). The GeneXpert Instrument System platform automates and integrates sample purification, nucleic acid amplification, and detection of the target sequence in simple or complex samples using real-time PCR and reverse transcriptase PCR (RT-PCR) assays. The systems require the use of singleuse disposable cartridges (the Xpert Flu/RSV XC cartridges) that hold the PCR reagents and host the PCR process. Because the cartridges are self-contained and specimens never come into contact with working parts of the instrument modules, cross-contamination between samples is minimized.

The Xpert Flu/RSV XC Assay includes reagents for the detection and differentiation of influenza A, influenza B, and RSV viral RNA directly from nasopharyngeal (NP) swab and nasal aspirate/wash (NA/W) specimens collected from patients with signs and symptoms of respiratory infection. A Sample Processing Control (SPC) and a Probe Check Control (PCC) are also included in the cartridge. The SPC is present to control for adequate processing of the target viruses and to monitor the presence of inhibitors in the PCR reaction. The Probe Check Control (PCC) verifies reagent rehydration, PCR tube filling in the cartridge, probe integrity and dye stability.

The single-use, multi-chambered fluidic cartridges are designed to complete sample preparation and real-time RT-PCR for detection and differentiation of influenza A, influenza B and RSV viral RNA in approximately 60 minutes or less. The GeneXpert Instrument Systems, comprised of the GeneXpert Dx Systems and the GeneXpert Infinity Systems, have 1 to 80 randomly accessible modules, depending upon the instrument, that are each capable of performing separate sample preparation and real-time PCR and RT-PCR tests. Each module contains a syringe drive for dispensing fluids (i.e., the syringe drive activates the plunger that works in concert with the rotary valve in the cartridge to move fluids between chambers), an ultrasonic horn for lysing cells or spores, and a proprietary I-CORE® thermocycler for performing real-time PCR and RT-PCR and detection.

Specimens are collected following the user's institution standard procedures for collecting NA/W specimens and NP swab specimens for influenza and RSV testing. The ancillary Cepheid Xpert Nasopharyngeal Sample Collection Kit (Cepheid catalog #SWAB/B-100) or Cepheid's Sample Collection Kit (Cepheid catalog #NASL-100N-100) are required but not provided for use with the assay. Both kits contain the identical viral transport medium and sterile nylon flocked swab. The NA/W specimen or the NP swab specimen is placed into the Xpert viral transport medium and sent to the GeneXpert® testing area for processing. When stored in the transport medium, the NA/W specimen or NP swab specimen is stable for up to 24 hours at 2-30 ℃ or up to seven days at 2-8 ℃. When ready to test the specimen, the user briefly mixes the specimen by inverting the tube five times, transfers the eluted material to the sample chamber in the top of the disposable fluidic cartridge. The user initiates a test from the system user interface and places the cartridge into the GeneXpert instrument platform, which performs hands-off real-time, multiplex polymerase chain reaction (PCR) for detection of RNA. The results are automatically generated at the end of the process in a report that can be viewed and printed.

Here's an analysis of the provided text, focusing on acceptance criteria and study details:

1. Table of Acceptance Criteria and Reported Device Performance

The document does not explicitly state formal "acceptance criteria" for the clinical performance in terms of specific PPA/NPA thresholds that had to be met for clearance. It presents the performance of the device and claims substantial equivalence to predicate devices. However, we can infer the desired performance from the presented data and the implicit expectation for a diagnostic assay to perform well. The analytical studies (LoD, specificity, inclusivity) demonstrate performance against well-defined criteria.

Inferred Clinical Acceptance Criteria (Based on Comparator Performance and FDA Clearance): The device's performance (PPA and NPA) should be demonstrably similar to or better than previously cleared predicate devices, with high positive and negative agreement. While no explicit thresholds like "PPA > X%" are stated for clinical studies, the demonstration of high agreement values and the claim of "substantially equivalent" implies these levels were considered acceptable by the FDA.

Ask a specific question about this device