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The University of Louisville Journal of Respiratory Infections

20.0334

Abstract

The large volume of diagnostic tests required by the response to the pandemic of COVID-19 pandemic resulted in a shortage of commercial nasopharyngeal swabs. In an effort to alleviate the shortage, swabs created by 3D printing may be a solution. We designed and produced 3D printed swabs and sought to compare their ability to detect SARS-CoV-2 in patients admitted for COVID-19 or who were suspected of having COVID-19. A total of 30 patients were swabbed with a commercial and printed 3D swab. Results matched in 28 of 31 patients (90%). Two patients were discordant with a positive commercial swab and a negative 3D printed swab and another was discordant because the 3D printed swab was positive and the commercial swab was negative. The sensitivity was 89%, specificity was 92% and Cohen’s kappa coefficient was 0.80. The 3D printed swabs performed acceptably compared to the commercial swab and may be considered for use in lieu of a commercial swab.

Funder

The authors received no specific funding for this work

DOI

10.18297/jri/vol4/iss1/41

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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