The first serological test — or antibody test — for the novel coronavirus will be rolled out as rapidly as possible, Chief Public Health Officer Theresa Tam said on Wednesday.

She said the tests will be used to detect antibodies for COVID-19 that can appear days, or even weeks after the infection to determine how much of the population may have been infected.

https://globalnews.ca/news/6938888/antibody-test-coronavirus-canada/