CTK Biotech has obtained the CE mark for our OnSite COVID-19 Ag Self Test. CTK will begin shipping this new test to the countries that accept the CE mark this month. The OnSite COVID-19 Ag Self Test is a single-use lateral flow immunoassay for the qualitative detection of SARS-CoV-2 nucleocapsid antigens in nasal swab specimens from individuals suspected of COVID-19..... Read Full Article >