Different performance of three point-of-care SARS-CoV-2 antigen detection devices in symptomatic patients and close asymptomatic contacts : a real-life study

Copyright © 2022 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved..

OBJECTIVES: PCR on nasopharyngeal exudates, the cornerstone of the detection of SARS-CoV-2, is time-consuming and commonly unavailable at primary health care centres. Detection of viral nucleocapsid antigens using lateral flow point-of-care tests is helpful for the early triage of patients who attend health care facilities.

METHODS: This was a prospective study carried out in clinically suspected cases and close asymptomatic contacts who attended a primary care centre (Madrid, Spain) for SARS-CoV-2 detection. Patients were divided into three 300-patient cohorts (n = 200 symptomatic cases and n = 100 close asymptomatic contacts per cohort). Three antigen detection tests (SGTI-Flex COVID-19 Ag, Panbio COVID-19 Ag Rapid Test Device, and GSD NovaGen SARS-CoV-2 Ag Rapid Test) were used and compared. Paired nasopharyngeal exudates were obtained, one swab for PCR and the other for antigen detection. Each antigen detection test was evaluated on one cohort.

RESULTS: All tests showed invariably 100% specificity. Sensitivity was 68.9% (95% CI: 55.7-80; SGTI-Flex), 71.1% (95% CI: 55.6-83.6; Panbio), and 84.6% (95% CI: 72-93.1; NovaGen) in clinically suspected patients and 84.6% (95% CI: 54.5-98.1), 33.3% (95% CI: 11.8-61.6), and 55.6% (95% CI: 30.7-78.4) in close asymptomatic contacts, respectively. Sensitivity was systematically higher in samples yielding positive PCR results with Ct ≤ 20.

DISCUSSION: We found considerable test-to-test antigen detection variations among patients with clinical suspicion of COVID-19 and close asymptomatic contacts. Negative antigen results, regardless of the test used, should be confirmed by PCR.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:28

Enthalten in:

Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases - 28(2022), 6 vom: 10. Juni, Seite 865-870

Sprache:

Englisch

Beteiligte Personen:

Escribano, Pilar [VerfasserIn]
Sánchez-Pulido, Ana-Erika [VerfasserIn]
González-Leiva, José [VerfasserIn]
Valero-López, Iván [VerfasserIn]
Catalán, Pilar [VerfasserIn]
Muñoz, Patricia [VerfasserIn]
Guinea, Jesús [VerfasserIn]
COVID-19 study group Hospital Gregorio Marañón [VerfasserIn]
COVID-19 study group Pavones care centre [VerfasserIn]
Adán, Iván [Sonstige Person]
Adán, Javier [Sonstige Person]
Alcalá, Luis [Sonstige Person]
Alonso, Roberto [Sonstige Person]
Álvarez-Uría, Ana [Sonstige Person]
Bouza, Emilio [Sonstige Person]
Catalán, Pilar [Sonstige Person]
Escribano, Pilar [Sonstige Person]
Estévez, Agustín [Sonstige Person]
Fernández-Del Rey, Rocío [Sonstige Person]
Galar, Alicia [Sonstige Person]
García de Viedma, Darío [Sonstige Person]
González, Pedro [Sonstige Person]
Gómez-Núñez, Ana [Sonstige Person]
Guinea, Jesús [Sonstige Person]
Herranz, Marta [Sonstige Person]
Kestler, Marta [Sonstige Person]
Machado, Marina [Sonstige Person]
Marín, Mercedes [Sonstige Person]
Muñoz, Patricia [Sonstige Person]
Olmedo, María [Sonstige Person]
Ortiz, Javier [Sonstige Person]
Palomo, María [Sonstige Person]
Pérez-Granda, María Jesús [Sonstige Person]
Pérez, Laura [Sonstige Person]
Rincón, Cristina [Sonstige Person]
Rodríguez, Sara [Sonstige Person]
Rodríguez, Belén [Sonstige Person]
Ruiz-Serrano, María Jesús [Sonstige Person]
Valerio, Maricela [Sonstige Person]
Vidán, Maite [Sonstige Person]
María Alonso Blanco, Ana [Sonstige Person]
Coca Escribano, Elena [Sonstige Person]
Blázquez Andrés, Susana [Sonstige Person]
Sastre Páez, María Sonsoles [Sonstige Person]
Vega López, Patricia [Sonstige Person]
Díez Vaquero, Lorena [Sonstige Person]
Sandoval Montejo, María Carmen [Sonstige Person]
Pinto Zurita, Jannet [Sonstige Person]
Jiménez Otero, Estefanía [Sonstige Person]
Cañón Cañón, Carolina [Sonstige Person]
Castro Romaní, Marisol [Sonstige Person]
Villamañán Lobo, David [Sonstige Person]
Roca Sánchez, Susana [Sonstige Person]
López Rodríguez, M Estrella [Sonstige Person]
Jiménez Morillo, Raquel [Sonstige Person]
Plaza Rivera, Sara [Sonstige Person]
Zaragoza Vargas, Natalia [Sonstige Person]
Sánchez Sánchez, José Alejandro [Sonstige Person]
Sánchez Carrasco, Cristina [Sonstige Person]
Corral Martínez, Pedro [Sonstige Person]
Valero López, Iván [Sonstige Person]
Ramos Del, Río Lourdes [Sonstige Person]
Huertas Uhagón, María [Sonstige Person]
Martín Francisco María de la, Peña [Sonstige Person]
Cañas Zuluaga, Ángela Bibiana [Sonstige Person]
Heras Martín, Laura [Sonstige Person]
García García, Ana Isabel [Sonstige Person]
Sevilla Aguerre, Ainhoa [Sonstige Person]
López Alonso, Ana Belén [Sonstige Person]
Sánchez Sánchez, Luis Alberto [Sonstige Person]
Cánovas Martínez, Miriam [Sonstige Person]
Roy Zafra, Rut [Sonstige Person]
García Ramos, Aitor [Sonstige Person]

Links:

Volltext

Themen:

Antigen detection
Antigens, Viral
COVID-19
Close asymptomatic contact
Journal Article
Point of care
SARS-CoV-2

Anmerkungen:

Date Completed 26.05.2022

Date Revised 28.03.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.cmi.2022.02.014

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM33734339X