Rapid antigen testing for home use - but what is it?

Testing yourself at home for COVID-19 without a health professional is now a common way to assess if you are in fact positive or negative with the virus. 

Here's what you need to know.

What are rapid antigen tests? 

Rapid antigen tests are a screening tool used to help detect potential COVID-19 virus indicators which can usually display the results within just 15 to 30 minutes.

They are not however a diagnostic tool that can definitely test or establish the presence of COVID-19. Always check with your doctor if you need further advice on your potential diagnosis of COVID-19.

An antigen, such as a viral protein, is a substance which the body recognises as harmful or foreign, resulting in the immune system producing antibodies against it.

The rapid antigen tests generally work by trying to detect whether your body has produced antibodies to the COVID-19 virus, however they do not provide a diagnosis of COVID-19 infection.

How do you use them?

Note: Individuals must always follow the instructions listed on the relevant test and still continue to follow the latest health advice in their area, including what actions they need to take if they receive a positive or negative rapid antigen test.

Each test has its own unique and special instructions and the product may not be right for you or allowed to be used in your state or territory.

You will need to read the label and follow the product instructions prior to use and follow the guidance recommended by your national and local health departments. 

For more information speak to your GP or healthcare professional.

How long does the test take?

Most tests display the result within 15 to 30 minutes. The instructions will usually specify how long you need to wait for the result to appear. Before taking a Rapid Antigen Test, always read the instructions provided.

Are rapid antigen tests accurate?

You can check the clinical sensitivity of the brand of rapid antigen test you have at this website: https://www.tga.gov.au/products/covid-19/covid-19-tests/covid-19-rapid-antigen-self-tests-home-use/covid-19-rapid-antigen-self-tests-are-approved-australia 

Can they be a false positive?

In some cases, tests may show a false positive. This could be due to a variety of reasons, such as timing of the test or the method used. 

Depending on the test’s clinical sensitivity, a test may not always detect COVID-19 .Please consult with your doctor if you are unsure. 

Reviewed by the healthylife Advisory Board November 2023