Why should I get tested if I don’t have any symptoms? We can break the chain of infection by detecting and self isolating people in the community who have COVID-19 but do not show any symptoms, which means otherwise they could go on and unknowingly infect others unless isolating. The testing centre at St Swithin’s, off Croft Street in Lincoln. | Photo: Stuart Wilde for CoLC You do not need to book an appointment to get an asymptomatic test at any of the four centres. You can just turn up between 8am and 8pm, Monday to Sunday. Upon arrival, staff will double-check with you if you have any COVID symptoms, such as fever, persistent cough, or loss of smell and/or taste.