iScience (Aug 2021)

Sensor array and gas chromatographic detection of the blood serum volatolomic signature of COVID-19

  • Yolande Ketchanji Mougang,
  • Lorena Di Zazzo,
  • Marilena Minieri,
  • Rosamaria Capuano,
  • Alexandro Catini,
  • Jacopo Maria Legramante,
  • Roberto Paolesse,
  • Sergio Bernardini,
  • Corrado Di Natale

Journal volume & issue
Vol. 24, no. 8
p. 102851

Abstract

Read online

Summary: Volatolomics is gaining consideration as a viable approach to diagnose several diseases, and it also shows promising results to discriminate COVID-19 patients via breath analysis. This paper extends the study of the relationship between volatile compounds (VOCs) and COVID-19 to blood serum. Blood samples were collected from subjects recruited at the emergency department of a large public hospital. The VOCs were analyzed with a gas chromatography mass spectrometer (GC/MS). GC/MS data show that in more than 100 different VOCs, the pattern of abundances of 17 compounds identifies COVID-19 from non-COVID with an accuracy of 89% (sensitivity 94% and specificity 83%). GC/MS analysis was complemented by an array of gas sensors whose data achieved an accuracy of 89% (sensitivity 94% and specificity 80%).

Keywords