What does • Both the CDC and TDH discourage employers and schools from requiring a medical note for clearance to return to work or school after an individual has COVID-19. What does the ‘C’ and ‘T’ mean on a lateral flow test? To understand the differences in the tests, it helps to understand the range of tests available for COVID-19. A . If the area under the “T,” or test section, has no line at all, that means it’s negative for COVID-19. Special Reports > Exclusives What Do COVID Antibody Levels Really Mean? You no longer have to get a foll… Is the COVID-19 Antigen Test Both issue a positive or negative result. Your body creates antibodies after getting infected with SARS-CoV-2 or after getting vaccinated against COVID-19. They are designed to detect the presence of antigens found in the Covid-19 virus. Read … This means there needs to be enough viral antigen in the sample for the antibodies on the test strip to generate a signal. What does A line next to "C" means the test has worked as intended with "C" standing for control. Score In COVID-19 Result: What rapid COVID test Swabbing and waiting for those little lines to come up has become a regular act for many. test means What it means if Covid lateral flow test result shows a faint red line