There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Here are the differences.

Polymerase chain reaction (PCR) test kits for COVID-19 use what’s known as gene cloning – not reproductive cloning – to detect the presence or absence of the SARS-CoV-2 virus, but social ...

A false positive result is possible with a rapid COVID-19 test. It happens when a person does not have COVID-19 but still tests positive for the disease.

The PCR test, which involves replicating a segment of COVID-19 DNA, is distinct from human cloning. In addition, the paper cited as evidence predates the pandemic and is unrelated to human cloning.

In this article, we look at what an antigen test is, how it works, and the benefits and risks of this type of test. We also compare antigen tests with PCR tests.

If a rapid test produces a negative result but you have a cough, fever or other symptoms, the CDC recommends you also do a PCR test.

Most people who contract COVID-19 likely won’t experience symptoms for more than two weeks at most, but could test positive even after that.

To generate test strips that would match PCR standards the team first made tiny DNA nanocircles containing a short sequence of the target DNA, such as the COVID virus, explainec co-author Yi Li, PhD.

Most people who contract COVID-19 likely won’t experience symptoms for more than two weeks at most, but could test positive months following infection.