Celltrion DiaTrust COVID-19 Ag Rapid Test is a lateral flow immunoassay intended for the qualitative detection of SARS-CoV-2 nucleocapsid and receptor binding domain (RBD) antigens in direct mid-turbinate nasal swab specimens. Results are for the identification of SARS-CoV-2 nucleocapsid and RBD protein antigens. We provide stable supply of Celltrion DiaTrustâ?¢ COVID-19 Ag Rapid Test kits in large quantities. Available Versions: Professional and Home Use. For serious purchasers, please contact us at sales@mtod.sg for a quotation. Price listed is only indicative and not the final.