Fig. 1. Photograph of the five types of sample collection devices and the transport medium. (A) NPS (NFS-1; Noble Bio), (B) NPS (Copan), (C) nasal swab (SS-1, Noble Bio), (D) saliva swab (SLS-1; Noble Bio), (E) saliva collection tube (Noble Bio), and (F) clinical transport medium (Noble Bio).
Abbreviation: NPS, nasopharyngeal swab.

Ann Lab Med 2023;43:434~442 https://doi.org/10.3343/alm.2023.43.5.434