An international, interlaboratory ring trial confirms the feasibility of an extraction-less "direct" RT-qPCR method for reliable detection of SARS-CoV-2 RNA in clinical samples. oleh Margaret G Mills, Emily Bruce, Meei-Li Huang, Jessica W Crothers, Ollivier Hyrien, Christopher A L Oura, Lemar Blake, Arianne Brown Jordan, Susan Hester, Leah Wehmas, Bernard Mari, Pascal Barby, Caroline Lacoux, Julien Fassy, Pablo Vial, Cecilia Vial, Jose R W Martinez, Olusola Olalekan Oladipo, Bitrus Inuwa, Ismaila Shittu, Clement A Meseko, Roger Chammas, Carlos Ferreira Santos, Thiago José Dionísio, Thais Francini Garbieri, Viviane Aparecida Parisi, Maria Cassia Mendes-Correa, Anderson V de Paula, Camila M Romano, Luiz Gustavo Bentim Góes, Paola Minoprio, Angelica C Campos, Marielton P Cunha, Ana Paula P Vilela, Tonney Nyirenda, Rajhab Sawasawa Mkakosya, Adamson S Muula, Rebekah E Dumm, Rebecca M Harris, Constance A Mitchell, Syril Pettit, Jason Botten, Keith R Jerome