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COVID-19 diagnosis in the emergency department: seeing the tree but losing the forest
  1. Dimitra S Mouliou,
  2. Ioannis Pantazopoulos,
  3. Konstantinos Gourgoulianis
  1. Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
  1. Correspondence to Ms Dimitra S Mouliou, Department of Respiratory Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece; demymoole{at}

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Dear Editor,

We have read with the greatest interest the article by Reynard et al.1 They have compared rapid antigen tests with PCR, which they consider to be the only molecular method. However, lateral flow assays (LFAs) together with several other laboratory methods are performed for the ‘molecular’ diagnosis of SARS-CoV-2.2 Furthermore, since the appearance of rapid nucleic assays, the term ‘rapid test’ for antigen/antibody assays can lead to misunderstanding and should be avoided.

Moreover, it is impossible to compare substantially different methods, …

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  • Correction notice Since this letter was published online, the corresponding author title has been updated from Dr to Ms.

  • Contributors All authors have contributed equally and approved the final version of the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

  • Provenance and peer review Not commissioned; internally peer reviewed.

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