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20 Jan 2021

DPG Media NV - Mediaplein 1, 2018 Antwerpen – RPR Antwerpen nr. The Accula SARS-CoV-2 test correctly identified 34/50 positive samples and 50/50 negative samples, corresponding to an overall percent agreement of 84.0% (95% CI, 75.3 to 90.6%), (Table 1). Our cutting-edge Biotechnologies ensure Accuracy and Precision in Developing Molecular Diagnostics & Preventive Medicine. The use of dry swabs was recommended by the manufacturer for optimal test performance. A key characteristic of any diagnostic test is the analytical LoD, which is commonly defined as the concentration of analyte that will be detected in 95% of replicate tests. VTM Group's team of Membership & Licensing experts handle the day-to-day interaction between the organization and its members, ensuring that communication flows smoothly. A total of 45 samples were collected in VTM (21 positive, 24 negative), and 55 were collected in saline (29 positive, 26 negative). The positive percent agreement was 68.0% (95% CI, 53.3 to 80.5%), the Cohen’s kappa coefficient was 0.74 (95% CI, 0.61 to 0.87), indicating substantial agreement, and the NPA was 100% (95% CI, 92.9% to 100%). (A) Positive patient specimen; (B) negative patient specimen. Phone: (202) 737-3600, Copyright © 2021 American Society for Microbiology | Privacy Policy | Website feedback, Print ISSN: 0095-1137; Online ISSN: 1098-660X, Comparison of the Accula SARS-CoV-2 Test with a Laboratory-Developed Assay for Detection of SARS-CoV-2 RNA in Clinical Nasopharyngeal Specimens, Sign In to Email Alerts with your Email Address. The importance of diagnostic testing for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been strongly emphasized by both the World Health Organization (WHO) and the United States Centers for Disease Control and Prevention (CDC) (1–3). Individuals with moderate to high pretest probability who initially test negative on the Accula test should undergo confirmatory testing with a separate EUA assay. With ansur you can remotely control the unit, create China Virus Sampling Tube Transport Medium Utm Vtm Virus Sampling Collector Sampling Tube, Find details about China Vtm Kits with Nasal Swab, Flocked Swabs from Virus Sampling Tube Transport Medium Utm Vtm Virus Sampling Collector Sampling Tube - … VTM Investment; an arm of VTM Strategy is a registered platform providing digital asset investment management services to individuals. We included 100 samples (50 positive, 50 negative) previously tested by the SHC-LDT and subsequently tested with the Accula SARS-CoV-2 POCT. The Accula SARS-CoV-2 POCT (Mesa Biotech, Inc., San Diego, CA) is a sample-to-answer nucleic acid amplification test that can yield a diagnostic result within 30 min of specimen collection. Due to biosafety regulations and hospital-mandated protocols for sample collection at SHC, NP swabs were directly placed into VTM or saline at the patient bedside after collection. RELATED STORIES Given the poor diagnostic performance of ID NOW and uncertainty regarding the availability of Xpert Xpress cartridges, the Accula system has been touted as an interesting POCT alternative, but data were previously lacking on its clinical performance. Rx Only . Currently, 3 CLIA-waived point-of-care tests (POCT) are EUA approved for SARS-CoV-2 testing: the Cepheid Xpert Xpress, the Abbott ID NOW, and the Mesa Accula (6). The test evaluates both the burning and afterglow times and dripping of the burning test specimen. We do not retain these email addresses. In contrast, some studies have raised concerns regarding the diagnostic accuracy of ID NOW, with positive percent agreement ranging from 75% to 94% compared to reference assays (8–10, 18). And it's in high demand – both within the Jefferson Health system and elsewhere in the United States. After the sample is transferred to the VTM (step 2), an RT-PCR test is performed, and the results are used as control. 005 Aptima® SARS-CoV-2 . Compared to the SHC-LDT, the Accula SARS-CoV-2 test showed excellent negative agreement. We provide a dynamic investment solutions to clients in need of a self-operating portfolio, as well as a smart fund with flexible time and investment amount. Statistics.Overall percent agreement, positive percent agreement (PPA), negative percent agreement (NPA), and associated 95% confidence intervals (CI) were calculated. A CLIA-certified laboratory or testing site must report antigen diagnostic test results to the local, state, tribal, or territory health department in accordance with Public Law 116-136, § 18115(a), the Coronavirus Aid, Relief, and Economic Security (CARES) Act. This document serves as a source of general tutorial information on the VVC design and also provides an encoder-side description of VTM6. This study was approved by the Stanford Institutional Review Board (protocol number 48973). This test allows you to run a ventilator for up to 48 hours on the QA-VTM and record key ventilation measurements. BioReference has been working expeditiously to develop and offer test services that will yield high quality and accurate results, including a molecular test for helping with COVID-19 diagnosis and a serology test to help indicate possible COVID-19 exposure Accuracy study design Both the control line and test … In summary, this study demonstrated that the Accula POCT lacks sensitivity compared to a reference EUA SARS-CoV-2 LDT. The manufacturer’s instructions comprise the following steps: collection of NP swab, lysis of viral particles in SARS-CoV-2 buffer, transfer of nucleic acid solution to a test cassette that contains internal process positive and negative controls, reverse transcription of viral RNA to cDNA, nucleic acid amplification, and detection by lateral flow. 2. Compared to high-complexity LDTs, POCT have the potential to reduce turnaround time of testing, optimize clinical management, and increase patient satisfaction (7). SEE THE DIFFERENCE, VTM BUILDS LONG TERM RELATIONSHIPS The performance of the Accula test was assessed by comparing results of 100 nasopharyngeal swab samples previously characterized by the Stanford Health Care EUA laboratory-developed test (SHC-LDT), targeting the envelope (E) gene. VTM is essential to ensuring the accuracy of the test results. Start with Accuracy. The 34 samples that were detected by both assays had a median CT value of 23.5 (IQR, 19.7 to 28.7). The VVC has been developed by a joint It remains unclear whether this decreased sensitivity is due to test validation studies being limited to in silico predictions and contrived samples using reference materials, as is the case currently for the Accula SARS-CoV-2 test. Although this is discordant with the best recommended practice by the manufacturer, it is in line with the practice at multiple institutions with clinical laboratories that have assessed SARS-CoV-2 POCT due to biosafety concerns from the risk of aerosolization (8–10, 18, 20). Despite the multiple potential benefits of POC assays, concern has been raised regarding their lower sensitivity for COVID-19 diagnosis than standard high-complexity molecular-based tests (8–10). The exact reason for the low sensitivity of the Accula test is unclear at present. In response to the novel coronavirus (SARS-CoV-2) outbreak, Thermo Fisher Scientific has worked rapidly to develop a new multiplex real-time RT-PCR diagnostic kit to enable clinical and public health laboratories to quickly diagnose COVID-19 caused by SARS-CoV-2 infection. ♦ Zoveel om te delen! The JVET established the Versatile Video Coding (VVC) working draft 5 and the VVC Test Model 6 (VTM6) algorithm description and encoding method at its 15th meeting (19–27 3–12 July, Gothenburg, SE). Point-of-care tests offer the potential advantages of improved access to testing and reduced turnaround time of results. This test uses reverse transcription-PCR (RT-PCR) to target the nucleocapsid protein (N) gene and is read out via lateral flow (Fig. 1 Virginia Test Method – 1 Laboratory Determination of Theoretical Maximum Density Optimum Moisture Content of Soils, Granular Subbase, and Base Materials – (Soils Lab) May 8, 2017 Copyright © 2020 American Society for Microbiology. Product Id 1126546. Of the multiple EUA assays for diagnosis of SARS-CoV-2, only the Xpert Xpress, the ID NOW, and the Accula tests are CLIA-waived (6). Implement • Monitor • Measure • Manage . Assay concordance was assessed by overall percent agreement, positive percent agreement (PPA), negative percent agreement (NPA), and Cohen’s kappa coefficient. These steps were performed within a biosafety cabinet to protect against aerosolization. These steps were performed within a biosafety cabinet to protect against aerosolization. The sample is collected from the patient using an NP swab. Methods 2.1. Filling time will be less than 1 secs/tube/pump of Recent data support the test performance of the Cepheid Xpert SARS-CoV-2 assay, with agreement of over 99% compared to high-complexity EUA assays (8, 16, 17). Of these, 24 individuals were symptomatic, and 2 were asymptomatic and tested for follow-up. The false negatives obtained from the Accula SARS-CoV-2 test were predominantly observed with low-viral-load specimens. Supplier from Hong Kong. Positive samples determined by the SHC-LDT included a range of cycle threshold (CT) values, with a median CT of 28.2 (interquartile range [IQR], 20.4 to 36.3). So, it’s a direct test for detecting COVID -19 viral particles from nasopharyngeal and oropharyngeal swabs collected and transported via Viral Transport medium (VTM). Washington, DC 20036 VTM DEVELOPS UNPARALLELED CUSTOMER SATISFACTION FOR LARGE AND SMALL SHIPPERS ALIKE. § 360bbb-3(b)(1), unless the authorization is … All remaining steps were followed per the manufacturer’s instructions (14). The aim of this study was to assess the test performance of the Accula SARS-CoV-2 test. ASM journals are the most prominent publications in the field, delivering up-to-date and authoritative coverage of both basic and clinical microbiology. Viral transport media (VTM) • 1 mL or 3 mL commercially available vials are acceptable (1 mL of volume may result in a Quantity Not Sufficient (QNS) if repeat testing of a specimen is needed. First, NP swabs were placed in VTM or saline at the patient bedside before loading the Accula test cassette, which may have decreased sensitivity by diluting the viral inoculum. Cohen’s kappa values between 0.60 and 0.80 were interpreted to indicate substantial agreement, and kappa values above 0.81 were interpreted as excellent agreement (15). Failure to pass the UL 94 V test is a precondition of all VTM ratings. Aptima SARS-CoV-2 - Panther System 1 AW-21492-001 Rev. However, for each of these scenarios and depending on the POCT used, the risk of missing a case due to low sensitivity must be considered. Our study has several limitations. Pre-treatment: China Nasal Swab for Cov 19 Test Accuracy, Swab Test, Find details about China Swab Test, Swab from Nasal Swab for Cov 19 Test Accuracy, Swab Test - Hunan Rummei Gene Technology Co., Ltd. Given the accumulating evidence on lower diagnostic performance with 2 of the 3 CLIA-waived SARS-CoV-2 assays, it is now important to consider how best to integrate these tests in diagnostic workflows and to identify groups of individuals for whom POCT use should be prioritized. The MS2 phage is active and can infect its host; hosts are Escherichia coli and other members of the Enterobacteriaceae. Sit down with VTM and you will find: Communication • Consultation • Design • Integrate • Test. This test is only authorized for the duration of the declaration that circumstances exist justifying the authorization of emergency use of in vitro diagnostics for detection and/or diagnosis of COVID-19 under Section 564(b)(1) of the Act, 21 U.S.C. We have no conflicts of interest to declare. Education of health care professionals on the limitations of SARS-CoV-2 POCT should also be implemented to ensure the optimal interpretation and management of negative results. A COVID-19 saliva test is being lauded by public health officials as a way for more people to get quick and accurate results in coronavirus testing, even if the patients are asymptomatic.. Journal of Microbiology & Biology Education, Microbiology and Molecular Biology Reviews, Department of Pathology, Stanford University School of Medicine, Stanford, California, USA, Clinical Virology Laboratory, Stanford Health Care, Stanford, California, USA, Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA, Strategic WHO technical advisory group for infectious H. 2020. UTM ® is a FDA cleared collection and transport system suitable for collection, transport, maintenance and long-term freeze storage of clinical specimens containing viruses, including COVID-19, chlamydia, mycoplasma or ureaplasma organisms. C, internal positive process control; T, SARS-CoV-2 test; NC, internal negative process control. Cohen’s kappa coefficient (κ) of qualitative results (detected/nondetected) between the Accula SARS-CoV-2 test and the SHC-LDT was also calculated with 95% CI. The 16 samples that were positive by SHC-LDT but negative by the Accula test had a median CT value of 37.7 (IQR, 36.6 to 38.2), consistent with lower viral loads. NOTE: We request your email address only to inform the recipient that it was you who recommended this article, and that it is not junk mail. A total of 3 samples resulted as invalid on initial testing by Accula were retested once. Second, it is possible that the use of saline instead of VTM led to poorer performance of the Accula. Investigators reported that the ID NOW test missed a third of the samples (5 of 15) detected positive by Xpert Xpress when using NP swabs in VTM and over 48% when using dry nasal swabs. Repeat testing of this sample showed the same faint test line and was interpreted as positive. Although SARS-CoV-2 testing capacity has improved in many countries, a global shortage of diagnostic infrastructure and consumable reagents has limited testing efforts. The aim of this study was to evaluate the test performance characteristics of the Accula SARS-CoV-2 test in a clinical setting against a high-complexity reference standard. This method is used to determine the UL 94 VTM-0, VTM-1 and VTM-2 flammability ratings of thin materials. However, aliquots from the same sample were used for parallel testing with the EUA method, which minimizes sources of variation, and represents a pragmatic comparison given widespread VTM shortages. Het beste van VTM. Pre-treatment:2 days / 23 °C / 50 % relative humidity7 days / 70 °C / hot air oven, The second flame application time begins as soon as the first burning time ends, Burning time of each individual test specimen (s), Burning and afterglow times after second flame application (s), Dripping of burning specimens (ignition of cotton batting), Combustion up to holding clamp (specimens completely burned). American Society for Microbiology For 20 years, VTM Group has empowered clients to excel by providing complementary professional services and managing time-consuming tasks. For Emergency Authorization Use (EUA) only For in vitro diagnostic use only . Careful consideration should be given to balance the potential advantages of rapid POCT to lower diagnostic accuracy. Finally, the lateral-flow read-out of the Accula test is generally easy to interpret; however, faint lines may be more challenging to interpret and lead to result discrepancies. The test performance characteristics of the Accula (Mesa Biotech) SARS-CoV-2 POC test need to be evaluated to inform its optimal use. For greater automation and enhanced viewing of the test data, you may want to utilize the ansur QA-VTM test soft-ware. The MS2 control is a critical internal control for the test and although not infectious to humans, laboratories should always employ universal precautions in the handling of all samples and reagents. To ensure accuracy of COVID-19 test results, VTM must be manufactured and dispensed into tubes in an aseptic environment. This question is for testing whether or not you are a human visitor and to prevent automated spam submissions. Certain groups, such as individuals requiring urgent preoperative assessment, including transplantation, patient-facing symptomatic health care workers, and individuals waiting for enrollment in a SARS-CoV-2 therapeutic trial, have been identified as key groups in whom to prioritize POCT. Accuracy Begins Here! In this study, we showed that, similar to ID NOW, the Accula SARS-CoV-2 test has a lower sensitivity for diagnosis of COVID-19 than an EUA LDT. COVID-19: towards controlling of a pandemic, Centers for Disease Control and Prevention (CDC), Evaluating and testing persons for coronavirus disease 2019 (COVID-19), Coronavirus disease (COVID-19) technical guidance: laboratory testing for 2019-nCoV in humans, Policy for coronavirus disease-2019 tests during the public health emergency (revised), Diagnostic testing for the novel coronavirus, Fast, portable tests come online to curb coronavirus pandemic, Clinical evaluation of three sample-to-answer platforms for the detection of SARS-CoV-2, Comparison of Abbott ID NOW and Abbott m2000 methods for the detection of SARS-CoV-2 from nasopharyngeal and nasal swabs from symptomatic patients, Five-minute point-of-care testing for SARS-CoV-2: not there yet, Sample pooling as a strategy to detect community transmission of SARS-CoV-2, Comparison of the Panther fusion and a laboratory-developed test targeting the envelope gene for detection of SARS-CoV-2, Detection of 2019 novel coronavirus (2019-nCoV) by real-time RT-PCR, Document library for Accula SARS-CoV-2 test, The measurement of observer agreement for categorical data, Comparison of commercially available and laboratory developed assays for in vitro detection of SARS-CoV-2 in clinical laboratories, The detection of SARS-CoV-2 using the Cepheid Xpert Xpress SARS-CoV-2 and Roche cobas SARS-CoV-2 assays, Comparison of Abbott ID NOW, Diasorin Simplexa, and CDC FDA EUA methods for the detection of SARS-CoV-2 from nasopharyngeal and nasal swabs from individuals diagnosed with COVID-19, Comparative performance of SARS-CoV-2 detection assays using seven different primer/probe sets and one assay kit, Abbott’s fast COVID test poses safety issues, lab workers say, Submission, Review, & Publication Processes, https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-criteria.html, https://www.who.int/emergencies/diseases/novel-coronavirus-2019/technical-guidance/laboratory-guidance, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/policy-coronavirus-disease-2019-tests-during-public-health-emergency-revised, https://www.fda.gov/medical-devices/emergency-situations-medical-devices/emergency-use-authorizations, https://www.mesabiotech.com/coronavirusdocuments, https://khn.org/news/abbotts-fast-covid-test-poses-safety-issues-lab-workers-say/. Several point-of-care (POC) molecular tests have received emergency use authorization (EUA) from the Food and Drug Administration (FDA) for the diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Dit is het officiële videokanaal van VTM, dé familiezender van Vlaanderen. One of these samples was positive for SARS-CoV-2 on repeat testing, and the other 2 samples were negative. The Accula SARS-CoV-2 test is a POCT that requires only 30 min from sample to answer and utilizes the existing palm-sized Accula dock system originally developed for rapid influenza and respiratory syncytial virus testing. In the United States, most SARS-CoV-2 testing has been conducted using high-complexity molecular-based laboratory-developed tests (LDTs) that have received emergency use authorization (EUA) from the Food and Drug Administration (FDA) in centralized laboratories certified to meet the quality standards of the Clinical Laboratory Improvement Amendments of 1988 (CLIA) (4, 5). Data on the presence of clinical symptoms were available for 26/50 individuals with positive results. In response to VTM shortages, ... cannot attest to the accuracy of a non-federal website. COVID-19 testing is imperative in helping healthcare providers identify infected and exposed patients more quickly. NPA was 100% (95% CI, 94.2 to 100%). Overall percent agreement between the assays was 84.0% (95% confidence interval [CI], 75.3 to 90.6%), PPA was 68.0% (95% CI, 53.3 to 80.5%), and the kappa coefficient was 0.68 (95% CI, 0.54 to 0.82). The false-negative rate of the Accula POC test calls for a more thorough evaluation of POC test performance characteristics in clinical settings and for confirmatory testing in individuals with moderate to high pretest probability of SARS-CoV-2 who test negative on Accula. 1) (14). Each test was performed at the laboratory, where a volume of 10 μl of VTM or saline was transferred to 60 μl of SARS-CoV-2 buffer and added to the test cassette. Comparison of the SHC-LDT for SARS-CoV-2 and the Accula SARS-CoV-2 PCR test, PPA of the Accula SARS-CoV-2 PCR test compared to the SHC-LDT for SARS-CoV-2, stratified by CT values and transport medium type. Thank you for sharing this Journal of Clinical Microbiology article. RT-PCR assays.The reference assay for this study was the Stanford Health Care Clinical Virology Laboratory real-time reverse transcriptase PCR LDT (SHC-LDT) targeting the E gene (11–13). Sixteen specimens detected by the SHC-LDT were not detected by the Accula test and showed low viral load burden, with a median cycle threshold value of 37.7. Enter multiple addresses on separate lines or separate them with commas. The test leverages the design principles of our current Xpert® Xpress Flu/RSV cartridge technology, in which multiple regions of the viral genome are targeted. 1752 N St. NW 0432.306.234 Measuring (ml) accuracy +/0.5% - Pump speed selectable in four speeds: 300 RPM. Buy high quality Vtm-Viral Transport Test Kit by Saat Global Ltd. Restricting the analysis to the 24 symptomatic individuals, the positive percent agreement was 66.7% (95% CI, 44.7% to 84.4%), and the median CT value was 26.5 (IQR, 19.8 to 37.3). We thank the members of the Stanford Health Care Clinical Virology Laboratory, Department of Emergency Medicine, and Department of Medicine, Division of Infectious Disease, for their hard work and dedication to patient care. The discarded VTM is frozen for transfer and storage. In individuals with moderate to high pretest probability of SARS-CoV-2, reflex testing of negative samples on a separate EUA assay should be performed. The test evaluates both the burning and afterglow times and dripping of the burning test specimen. The lateral-flow read-out on the Accula test was considered easy to interpret for all samples, with the exception of a single known positive sample that showed a faint positive test line. ID-NOW instrument and were compared to NP swabs transported in VTM and tested on the GeneXpertâ Xpress test. CONTENTS General Information The same NP specimen was used for both the reference assay (tested first) and Accula test (tested subsequently) for comparison. The positive percent agreement varied by CT values and transport medium used, with higher performance in samples with low-CT samples and in VTM (Table 2). COVID-19 Testing. The result of this test should not be the sole basis for the diagnosis; confirmatory testing is required. The RT-PCR test can only tell whether the person has live or very recently dead virus in their body at the time of sample collection. Using this approach, our goal was to evaluate the performance—in parallel—of three NAATs from nasopharyngeal (NP) swabs in M4-RT viral transport medium (VTM) (m2000, Xpert, Simplexa) and an NAAT assay performed directly from a nasal swab (ID NOW). Reporting Antigen Test Results for SARS-CoV-2 to Health Departments and Patients. Trend Test can be selected and performed. Nasopharyngeal (NP) swabs were collected in viral transport medium (VTM) or saline from adult patients from Stanford Health Care (SHC) and from pediatric and adult patients from surrounding hospitals in northern California. - Semi Automatic VTM Dispenser is used to measure 3ml of liquid accurately and pump into individual sterile conical screwcapped tubes, by pressing the leg pedal switch. Xpert® Xpress SARS-CoV-2* Cepheid has developed an automated molecular test for the qualitative detection of SARS-CoV-2, the virus that causes COVID-19. infections (test codes 31686, 31687, 31688) are available as a separate document. Each test was performed at the laboratory, where a volume of 10 μl of VTM or saline was transferred to 60 μl of SARS-CoV-2 buffer and added to the test cassette. Contrary to manufacturer expectations, however, our parallel study showed that the PPA of ID Now using dry nasal swabs (54.8%) was actually lower than when using NPS in VTM (66.7%) on 15 consecutive positive samples as determined by Xpert Xpress in this study. Failure to pass the UL 94 V test is a precondition of all VTM ratings. Furthermore, reagents and kits have been limited, which limits POCT capacity. Images of the Accula SARS-CoV-2 lateral-flow readout. This method is used to determine the UL 94 VTM-0, VTM-1 and VTM-2 flammability ratings of thin materials. Testing was repeated once for invalid results on initial testing, and the second result was interpreted as final if valid. Met exclusieve nieuwtjes, de leukste fragmenten en een heleboel extra's van je favoriete programma's. The first quantitative RT-PCR test for detecting SARS-CoV2 was designed and distributed in January 2020 by the World Health ... and significant questions remain about the accuracy of these tests across the full spectrum of viral loads (, ... as samples may become too dilute in VTM and low-level positives may falsely test negative. After thaw, aliquots are thermally lysed (step 3b) before the RT-LAMP is conducted (65 °C, 60 min). Flammability UL 94 VTM Vertical Thin Material. AccuGene, Inc., established in 2014, is a specialized molecular biotechnology company that aims to improve quality of life with specialized technologies for future molecular diagnosis. Poct to lower diagnostic accuracy viral load ) positive patient specimen ; ( B ) negative patient specimen ; B! Molecular Diagnostics & Preventive Medicine SARS-CoV-2 LDT 31688 ) are available as a separate assay... Van Vlaanderen 94 VTM-0, VTM-1 and VTM-2 flammability ratings of thin materials used to determine the UL 94,... 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