• F J Candel, J M Viñuela-Prieto, J González Del Castillo, P Barreiro García, M Fragiel Saavedra, A Hernández Píriz, D Jiménez Virumbrales, J Canora Lebrato, G García de Casasola, R Gil Prieto, J San-Román Montero, J Ortega Anselmi, R Barba Martín, F Prados Roa, J Marco Martínez, and Zapatero Gaviria A A.
• Francisco Javier Candel González. Clinical Microbiology and Infectious Diseases. Hospital Clínico San Carlos. Madrid. Spain. COVID-19 IFEMA Field Hospital. fj.candel@gmail.com.
• Rev Esp Quimioter. 2020 Aug 1; 33 (4): 258-266.

ObjectiveThe diagnosis of SARS-CoV-2 infection is crucial for medical and public health reasons, to allow the best treatment of cases and the best control of the pandemic. Serology testing allows for the detection of asymptomatic infections and 19-COVID cases once the virus has been cleared. We analyzed the usefulness of the SARS-CoV-2 rapid test of Autobio and tried to correlate its pattern with the severity of COVID19 infection.MethodsWe analyzed the accuracy and clinical usefulness of a point-of-care IgM and/or IgG test for SARS-CoV-2 in 35 COVID-19 patients [12 (34.3%) mild-moderate and 23 (65.7%) severe-critical] admitted to a field hospital in Madrid, as well as in 5 controls.ResultsThe mean time from the first day of symptoms to the antibody test was 28 days (SD: 8.7), similar according to the severity of the disease. All patients with SARS-CoV-2 PCR+ showed the corresponding IgG positivity, while these results were negative in all control individuals. A total of 26 (74%) cases also presented with positive IgM, 19 (83%) were severe-critical cases and 7 (58%) were mild-moderate cases. The IgM response lasted longer in the severe critical cases (mean: 29.7 days; SD: 8.4) compared to the moderate cases (mean: 21.2 days; SD: 2.0)..ConclusionsRapid serology tests are useful for the diagnosis of patients with COVID-19 (mainly IgG detection) and may also be correlated with the severity of the infection (based on IgM detection).©The Author 2020. Published by Sociedad Española de Quimioterapia. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)(https://creativecommons.org/licenses/by-nc/4.0/).

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