SARS-CoV-2 molecular testing and whole genome sequencing following RNA recovery from used BinaxNOW COVID-19 antigen self tests

J Clin Virol. 2023 May:162:105426. doi: 10.1016/j.jcv.2023.105426. Epub 2023 Mar 24.

Abstract

Widespread use of over-the-counter rapid diagnostic tests for SARS-CoV-2 has led to a decrease in availability of clinical samples for viral genomic surveillance. As an alternative sample source, we evaluated RNA isolated from BinaxNOW swabs stored at ambient temperature for SARS-CoV-2 rRT-PCR and full viral genome sequencing. 81 of 103 samples (78.6%) yielded detectable RNA, and 46 of 57 samples (80.7 %) yielded complete genome sequences. Our results illustrate that SARS-CoV-2 RNA extracted from used Binax test swabs provides an important opportunity for improving SARS-CoV-2 genomic surveillance, evaluating transmission clusters, and monitoring within-patient evolution.

Keywords: COVID-19; RT-PCR; Rapid test; SARS-CoV-2; Sequencing.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • COVID-19* / diagnosis
  • Humans
  • Molecular Diagnostic Techniques
  • RNA, Viral / analysis
  • RNA, Viral / genetics
  • SARS-CoV-2* / genetics
  • Whole Genome Sequencing / methods

Substances

  • RNA, Viral