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Zhang W, Xu X, Qi L, Liu M, Zhao X, Kong L, Wang Y, Chen F, Zhang C, Cheng J, Zheng W. Clinical evaluation of a new COVID-19 antigen rapid test kit for detection of SARS-CoV-2. Diagn Microbiol Infect Dis 2024; 108:116136. [PMID: 38041889 DOI: 10.1016/j.diagmicrobio.2023.116136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/04/2023]
Abstract
The antigen rapid diagnostic test (Ag-RDT) is an assay kit for detecting the SARS-COV-2 nucleocapsid proteins, based on the colloidal gold method.Accurate diagnosis has an important role in limiting the transmission of SARS-COV-2, and also helps patients to receive earlier treatment .The object of this study was to perform the clinical evaluation of a novel Ag-RDTs with samples collected from two different swabs.DEEPBLUE®COVID-19 antigen detection kit used for the examination of the subjects in the experiment.For antigen testing on samples collected with nasal swabs, sensitivity was 91.7 % (95 % CI 83.6-96.6 %) and specificity was 100 %(95 %CI 98.1-100 %).For nasopharyngeal swabs, the sensitivity was 96.8 % (95 % CI 93.6-98.7 %) and the specificity was 100 % (95 % CI 98.2-100 %).Fisher Precision test showed a significant correlation between nasopharyngeal swab Ag-RDTs and nasal swab Ag-RDTs and RT-qPCR test (p-value <0.001).The results showed that the patients use the kit for testing were comparable to the RT-qPCR.
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Affiliation(s)
- Wenjing Zhang
- Department of Laboratory Medicine, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Xiaoliang Xu
- School of Laboratory Medicine, Bengbu Medical College, Bengbu 233030, Anhui, China
| | - Liangshuai Qi
- School of Laboratory Medicine, Bengbu Medical College, Bengbu 233030, Anhui, China
| | - Mingkai Liu
- Department of Laboratory Medicine, The First Affiliated Hospital, Shihezi University, Shihezi 832008, Xinjiang, China
| | - Xiaoying Zhao
- Department of Laboratory Medicine, The First Affiliated Hospital, Shihezi University, Shihezi 832008, Xinjiang, China
| | - Lingshang Kong
- Department of General Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei 230601, Anhui, China
| | - Yingji Wang
- Department of Geriatric Endocrinology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610072, Sichuan, China
| | - Fengling Chen
- Anhui DeepBlue Medical Technology Co. Ltd., Hefei, 230088, Anhui, China
| | - Chao Zhang
- Anhui DeepBlue Medical Technology Co. Ltd., Hefei, 230088, Anhui, China.
| | - Jianghua Cheng
- Institute of Agricultural Products Processing, Anhui Academy of Agricultural Sciences, Hefei 230031, Anhui, China.
| | - Weiwei Zheng
- Department of Laboratory Medicine, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China.
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Tsang NNY, So HC, Cowling BJ, Leung GM, Ip DKM. Performance of saline and water gargling for SARS-CoV-2 reverse transcriptase PCR testing: a systematic review and meta-analysis. Eur Respir Rev 2022; 31:31/165/220014. [PMID: 36130785 DOI: 10.1183/16000617.0014-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 06/21/2022] [Indexed: 11/05/2022] Open
Abstract
The performance of gargling for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reverse transcriptase (RT)-PCR testing has not been previously reviewed. This review systematically assessed the performance of saline and water gargling for SARS-CoV-2 RT-PCR testing in the settings of diagnosing and monitoring viral shedding.We included original studies comparing the performance of gargling and (oropharyngeal-)nasopharyngeal swabs for SARS-CoV-2 RT-PCR testing. Studies conducted in either suspected individuals or confirmed cases were included and analysed separately. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were examined using random-effects models.Gargles achieved a high overall sensitivity (91%), specificity (97%), PPV (95%) and NPV (91%) for SARS-CoV-2 RT-PCR testing. Studies using saline gargle and water gargle have an overall sensitivity of 97% and 86%, respectively. The sensitivity values were largely maintained for saline and water gargling on stratified analysis, for both diagnosis (96% and 92%) and viral shedding monitoring (98% and 78%). A higher sensitivity was also reported by studies using sterile saline (100%), a smaller amount of gargling solution (92% versus 87%) and a longer gargling duration (95% versus 86%).Our results supported the use of gargling as a sampling approach for SARS-CoV-2 RT-PCR testing, which achieved a high sensitivity for both diagnosis and viral shedding monitoring purposes. Further investigation on the comparative performance of different gargling mediums is needed to draw a definitive conclusion.
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Affiliation(s)
- Nicole Ngai Yung Tsang
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Hau Chi So
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Benjamin J Cowling
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Gabriel M Leung
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Dennis Kai Ming Ip
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
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Author’s Reply to “Concerns regarding Validity of the Use of Bean Extract-Based Gargle for COVID-19 Diagnosis”. Microbiol Spectr 2022; 10:e0107022. [PMID: 35862949 PMCID: PMC9430113 DOI: 10.1128/spectrum.01070-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Concerns Regarding Validity of the Use of Bean Extract-Based Gargle for COVID-19 Diagnosis. Microbiol Spectr 2022; 10:e0073822. [PMID: 35862942 PMCID: PMC9431556 DOI: 10.1128/spectrum.00738-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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