Kantaro and Atrys Health Partnership Expand Global Footprint of Quantitative COVID-19 Antibody Tests in Europe and South America PR Newswire NEW YORK, Feb. 8, 2021 -Kantaro's COVID-SeroKlir and COVID-SeroIndex are high-performing tests that detect the presence and precise level of neutralizing antibodies¹- -First and only quantitative COVID-19 antibody tests that do not require proprietary equipment- NEW YORK , Feb. 8, 2021 /PRNewswire/ -- Kantaro Biosciences, LLC, a joint venture between the...