Ask Fuzzy: How do rapid antigen tests work?

By Hassan Vally
March 26 2022 - 1:30pm
Rapid antigen tests approved for use in Australia must meet certain standards of accuracy. Picture: Shutterstock

A rapid antigen test (RAT) is a chemical test that detects the presence of the COVID virus in the body. It's effectively a portable chemistry laboratory on a strip of plastic that detects viral proteins in a sample of nasal secretions or saliva.