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Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity
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. METH...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Penerbit Universiti Sains Malaysia
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8715885/ https://www.ncbi.nlm.nih.gov/pubmed/35002494 http://dx.doi.org/10.21315/mjms2021.28.6.10 |
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author | ALJINDAN, Reem Y ALNIMR, Amani M AL DOSSARY, Reem A AL HADDAD, Ali J ALTURKI, Fatimah A AL-ROMIHI, Nouf Mohammed ALDOSSARY, Bashayer Hussain ALKHARSAH, Khaled R |
author_facet | ALJINDAN, Reem Y ALNIMR, Amani M AL DOSSARY, Reem A AL HADDAD, Ali J ALTURKI, Fatimah A AL-ROMIHI, Nouf Mohammed ALDOSSARY, Bashayer Hussain ALKHARSAH, Khaled R |
author_sort | ALJINDAN, Reem Y |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-8715885 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Penerbit Universiti Sains Malaysia |
record_format | MEDLINE/PubMed |
spelling | pubmed-87158852022-01-07 Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity ALJINDAN, Reem Y ALNIMR, Amani M AL DOSSARY, Reem A AL HADDAD, Ali J ALTURKI, Fatimah A AL-ROMIHI, Nouf Mohammed ALDOSSARY, Bashayer Hussain ALKHARSAH, Khaled R Malays J Med Sci Original Article 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. Penerbit Universiti Sains Malaysia 2021-12 2021-12-22 /pmc/articles/PMC8715885/ /pubmed/35002494 http://dx.doi.org/10.21315/mjms2021.28.6.10 Text en © Penerbit Universiti Sains Malaysia, 2021 https://creativecommons.org/licenses/by/4.0/This work is licensed under the terms of the Creative Commons Attribution (CC BY) (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ). |
spellingShingle | Original Article ALJINDAN, Reem Y ALNIMR, Amani M AL DOSSARY, Reem A AL HADDAD, Ali J ALTURKI, Fatimah A AL-ROMIHI, Nouf Mohammed ALDOSSARY, Bashayer Hussain ALKHARSAH, Khaled R Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity |
title | Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity |
title_full | Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity |
title_fullStr | Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity |
title_full_unstemmed | Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity |
title_short | Pooled Specimen Testing Using Automated Cartridge-Based System for COVID-19: The Cost on Sensitivity |
title_sort | pooled specimen testing using automated cartridge-based system for covid-19: the cost on sensitivity |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8715885/ https://www.ncbi.nlm.nih.gov/pubmed/35002494 http://dx.doi.org/10.21315/mjms2021.28.6.10 |
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