Now we have access to PCR tests (known as RT-PCR, or reverse transcription-polymerase chain reaction, tests) and rapid antigen tests to detect SARS-CoV-2, the virus that causes COVID.

Using an over-the-counter antigen test to find out if you have COVID-19 is helpful, if you use it correctly and repeatedly.

A rapid antigen test is a screening tool – it can indicate that you might be infected, but you need a PCR test to confirm the result.

From when to take an at-home test to making the best decision based on your results, a UCHealth doctor explains what you need to know about rapid tests.

How to take a Covid rapid antigen test and why you may be doing it wrong With many Aussies now relying on home rapid antigen tests, a leading doctor reveals how you should be taking the test ...

How do rapid antigen COVID-19 tests work? Why did the US government just pledge to buy 280 million of them? And is that even enough to help curb the spread of the virus?

If rapid antigen tests are stored in an environment that's too cold or too hot, they may give inaccurate results, including false negatives. And when you're ready to take the test, read the ...

Using an over-the-counter antigen test to find out if you have COVID-19 is helpful, if you use it correctly and repeatedly.

Using an over-the-counter antigen test to find out if you have COVID-19 is helpful, if you use it correctly and repeatedly.

You see, those over-the-counter antigen tests are capturing whether COVID-19 is present at that "exact" moment you take the test. It doesn't tell you if you have COVID-19.