What should you know about rapid antigen test results?

A positive result means the test detected an antigen associated with COVID-19 and should be treated seriously, especially when symptoms or recent exposure fit. A negative result means the test did not detect antigen in that sample; it does not always exclude infection, particularly early in illness or when sampling was difficult. An invalid result means the test did not work as intended and needs to be repeated with a fresh kit according to its instructions. A Rapid Antigen Test Kit has specific handling, timing, and storage requirements.

Read the result within the time window printed in the instructions, record the date and symptoms, and avoid interpreting a dried or late-appearing line. Follow local medical advice after a positive result and limit close contact while seeking guidance. If symptoms continue despite a negative result, contact a clinician about a COVID-19 Test or repeat testing. Do not share test materials, and dispose of the used kit as directed.

Seek urgent care for severe breathing difficulty, persistent chest pain, new confusion, inability to stay awake, or blue or grey lips. Arrange medical advice for worsening symptoms, dehydration, or a positive result if you have a condition or treatment that may increase the consequences of infection. Testing should not delay help for serious symptoms.

Should I repeat the test or arrange a COVID-19 Test? How should I manage contact with others? Do my symptoms or medical history change the follow-up plan?