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About 940 results

ALLMedicine: Sars Center

False-Positive Results in Rapid Antigen Tests...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8742218
JAMA Gans JS, Goldfarb A et. al.

Jan 8th, 2022 - False-Positive Results in Rapid Antigen Tests for SARS-CoV-2.|2022|Gans JS,Goldfarb A,Agrawal AK,Sennik S,Stein J,|diagnosis,immunology,

Avoiding false positive for SARS-CoV-2 when using rapid antigen tests
https://www.eurekalert.org/news-releases/934519

Nov 10th, 2021 - Washington, D.C. – November 9, 2021 – In light of frequent false positives, a team of Canadian researchers has shown that rapid antigen tests for SARS-CoV-2 work only when manufacturer instructions are followed. The research is published this week in Microbiology Spectrum, a journal of the American Society for Microbiology. T...

Potential for false-positive results with quantitative antigen tests for SARS-CoV-2: A case of a child with acute respiratory infection
https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC8585597/
Journal of Infection and Chemotherapy : Official Journal of the Japan Society of Chemotherapy; Hase R, Kurita T et. al.

Nov 12th, 2021 - The quantitative antigen test based on the chemiluminescent enzyme immunoassay for SARS-CoV-2 has been used in international airports for quarantine in Japan. While cases of false-positive rapid antigen tests for SARS-CoV-2 were reported, false-positive cases of the quantitative antigen test...

Potential for False Positive Results with Antigen Tests...
https://www.fda.gov/medical-devices/letters-health-care-providers/potential-false-positive-results-antigen-tests-rapid-detection-sars-cov-2-letter-clinical-laboratory
MedWatch; FDA

Nov 3rd, 2020 - The U.S. Food and Drug Administration (FDA) is alerting clinical laboratory staff and health care providers that false positive results can occur with antigen tests, including when users do not follow the instructions for use of antigen tests for the rapid detection of SARS-CoV-2. Generally, antigen tests...

False-positivity results in rapid antigen tests for ...
https://doi.org/10.1080/14787210.2022.2070152
Expert Review of Anti-infective Therapy; Yang YP, Huang LL et. al.

Apr 23rd, 2022 - The rapid antigen detection tests (RADTs) for SARS-CoV-2 infection could contribute to the clinical and public health strategies for managing COVID-19. This umbrella review aimed to explore the accuracy and sensitivity of RADTs for SARS-CoV-2 by assessing the incidence of false positivity associated with them. Meta-analyses a...

Potential for False Positive Results with Antigen Tests for Rapid Detection of SARS-CoV-2 - Letter to Clinical Laboratory Staff and He...
http://www.fda.gov/medical-devices/letters-health-care-providers/potential-false-positive-results-antigen-tests-rapid-detection-sars-cov-2-letter-clinical-laboratory

The U.S. Food and Drug Administration (FDA) is alerting clinical laboratory staff and health care providers that false positive results can occur with antigen tests, including when users do not follow the instructions for use of antigen tests for the rapid detection of SARS-CoV-2. Generally, antigen tests...

Efficacy comparison of three rapid antigen tests for SARS-CoV-2 and how viral load impa...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8242364
Journal of Medical Virology; Blairon L, Cupaiolo R et. al.

May 30th, 2021 - More and more rapid antigen tests for the diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) appear in the market with varying performance. The sensitivity of these tests heavily depends on the viral load, extrapolated by the threshold cycle (Ct). It is therefore essential to verify their ...

COVID-19 and schools: what is the risk of contagion? Results of a rapid-antigen-test-ba...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8450223
International Journal of Infectious Diseases : IJID : Off... Bonaccorsi G, Paoli S et. al.

Sep 22nd, 2021 - In the coronavirus disease 2019 era, debate around the risk of contagion in school is intense in Italy. The Department of Welfare and Health of Florence promoted a screening campaign with rapid antigen tests for all students and school personnel. The aim of this study was to assess the circulation of severe acute respiratory syndrome coronavirus-2 (SARS...

Self-testing for the detection of SARS-CoV-2 infection with rapid antigen tests for peo...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8336990
Clinical Microbiology and Infection : the Official Public... Stohr JJJM, Zwart VF et. al.

Aug 8th, 2021 - To evaluate the performance of nasal mid-turbinate self-testing using rapid antigen detection tests (RDT) for persons with suspected coronavirus disease 2019 (COVID-19) in the community. Self-testing for COVID-19 infection with lateral flow assay severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RDT, ...

Clinical assessment of SARS-CoV-2 antigen rapid detection compared with RT-PCR assay fo...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620016
International Journal of Infectious Diseases : IJID : Off... Jian MJ, Perng CL et. al.

Nov 30th, 2021 - With the emergence of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) B.1.1.7 lineage in the ongoing coronavirus disease 2019 (COVID-19) pandemic, Taiwan confronted a COVID-19 flare up in May 2021. Large-scale, accurate, affordable and rapid diagnostic tests such as the lateral flow assay...

SARS-CoV-2 variants with T135I nucleocapsid mutations may affect antigen test performance.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8572148
International Journal of Infectious Diseases : IJID : Off... Jian MJ, Chung HY et. al.

Nov 11th, 2021 - Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused a pandemic. Diagnostic testing for SARS-CoV-2 has continuously been challenged due to several variants with diverse spike (S) and nucleocapsid (N) protein mutations []. SARS-CoV-2 variant proliferation potentially affects N pro...

Monoclonal antibody pairs against SARS-CoV-2 for rapid antigen test development.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9004783
PLoS Neglected Tropical Diseases; Salcedo N, Reddy A et. al.

Apr 1st, 2022 - The focus on laboratory-based diagnosis of coronavirus disease 2019 (COVID-19) warrants alternative public health tools such as rapid antigen tests. While there are a number of commercially available antigen tests to detect severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), all cross-rea...

Sensitivity of severe acute respiratory syndrome coronavirus type 2 rapid antigen point...
https://doi.org/10.1097/MEJ.0000000000000928
European Journal of Emergency Medicine : Official Journal... Bollinger M, Saile P et. al.

Apr 13th, 2022 - Rapid antigen point-of-care tests (antigen POC tests) are frequently used to detect COVID-19 infections. Based on clinical impressions, we suspected that the sensitivity of antigen POC tests might be lower in vaccinated patients. To evaluate the sensitivity of antigen POC tests in vaccinated patients. We retrospectively evaluated al...

Real-World, Rapid COVID-19 Testing Shows Few False Positives
https://www.clinicalpainadvisor.com/general-medicine/real-world-rapid-covid-19-testing-shows-few-false-positives/
Clinical Pain Advisor

Jan 20th, 2022 - HealthDay News — In a Canadian employer screening program, the overall rate of false-positive results using rapid antigen test screens for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is very low, according to a research letter published online Jan. 7 in the Journal of the American Medical...

Real-World, Rapid COVID-19 Testing Shows Few False Positives
https://www.psychiatryadvisor.com/home/topics/general-psychiatry/real-world-rapid-covid-19-testing-shows-few-false-positives/
Psychiatry Advisor

Jan 14th, 2022 - HealthDay News — In a Canadian employer screening program, the overall rate of false-positive results using rapid antigen test screens for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is very low, according to a research letter published online Jan. 7 in the Journal of the American Medical...

Routine Antigen Testing Is Not a Substitute for Health Care Worker Vaccination against ...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8525552
Journal of Clinical Microbiology; Sexton ME, Kraft CS

Sep 2nd, 2021 - The utility of rapid antigen testing for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is measured within the context for which it is applied; diagnostic accuracy must be considered in determining if rapid antigen testing is appropriate for the clinical situation. In this issue of the Journal of C...

Performance and application evaluation of SARS-CoV-2 antigen assay.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9088371
Journal of Medical Virology; Ye Q, Shao W et. al.

Apr 22nd, 2022 - Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) nucleic acid detection is the gold standard for the laboratory diagnosis of coronavirus disease 2019 (COVID-19). However, this method has high requirements for practitioners' skills and testing sites, so it is not easy to popularize and promote the application in places other than large hospitals. In...

Logistic advantage of two-step screening strategy for SARS-CoV-2 at airport quarantine.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8220861
Travel Medicine and Infectious Disease; Yokota I, Shane PY et. al.

Jun 27th, 2021 - Airport quarantine is required to reduce the risk of entry of travelers infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, it is challenging for both high accuracy and rapid turn-around time to coexist in testing; polymerase chain reaction (PCR) is time-consuming with high accuracy, while antigen...

Rapid SARS-CoV-2 antigen detection assay in comparison with real-time RT-PCR assay for ...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7665091
Virology Journal; Chaimayo C, Kaewnaphan B et. al.

Nov 15th, 2020 - The Coronavirus disease 2019 (COVID-19) pandemic continues to spread across the world. Hence, there is an urgent need for rapid, simple, and accurate tests to diagnose severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Performance characteristics of the rapid SARS-CoV-2 ...

Antigen-Based Testing but Not Real-Time Polymerase Chain Reaction Correlates With Sever...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7929138
Clinical Infectious Diseases : an Official Publication Of... Pekosz A, Parvu V et. al.

Jan 23rd, 2021 - Individuals can test positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) by molecular assays following the resolution of their clinical disease. Recent studies indicate that SARS-CoV-2 antigen-based tests are likely to be positive early in the disease course, when there...