Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity.
| Autor: | Aljindan RY; Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University (IAU), Dammam, Saudi Arabia., Alnimr AM; Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University (IAU), Dammam, Saudi Arabia., Al Dossary RA; Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University (IAU), Dammam, Saudi Arabia., Al Haddad AJ; Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University (IAU), Dammam, Saudi Arabia., Alturki FA; Microbiology Laboratory, Medical Laboratory Department, King Fahd Hospital of the University, Al Khobar, Saudi Arabia., Al-Romihi NM; Microbiology Laboratory, Medical Laboratory Department, King Fahd Hospital of the University, Al Khobar, Saudi Arabia., Aldossary BH; Microbiology Laboratory, Medical Laboratory Department, King Fahd Hospital of the University, Al Khobar, Saudi Arabia., Alkharsah KR; Department of Microbiology, College of Medicine, Imam Abdulrahman Bin Faisal University (IAU), Dammam, Saudi Arabia. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | The Malaysian journal of medical sciences : MJMS [Malays J Med Sci] 2021 Dec; Vol. 28 (6), pp. 100-107. Date of Electronic Publication: 2021 Dec 22. |
| DOI: | 10.21315/mjms2021.28.6.10 |
| Abstrakt: | Background: Pooled specimen screening for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can improve laboratory testing capacity. This study assessed the impact of pooling and retesting individual swabs on the overall detection rate and reduction in the frequency of retesting. Methods: One hundred respiratory swabs specimens were tested individually and in pools of three or five samples using the Cepheid's Xpert ® Xpress SARS-CoV-2 test kit. The optimum number of samples per pool was calculated using the application 'A Shiny App for Pooled Testing'. Results: Twenty-five pools were generated from 101 samples. Out of 13 pools that contained five samples each, three pools gave true positive results. While out of the 12 pools that contained three samples each, five pools gave true positive results. Four samples gave a false negative pool result. The overall sensitivity and specificity of the assay in the pools were 66.6% and 100%, respectively. The cycle threshold was reduced in most of the pools compared to individual sample tests. Conclusion: The overall pooled test had a remarkable impact on laboratory resources. Yet, caution is warranted when selecting the cases for pooled testing, since the reduction in sensitivity can significantly impact and increase the risk of exposure to infection. Competing Interests: Conflicts of Interest None. (© Penerbit Universiti Sains Malaysia, 2021.) |
| Databáze: | MEDLINE |
| Externí odkaz: |
|