How reliable are lateral flow COVID-19 tests?

We take a look at whether the widely used lateral flow tests help detect COVID-19, and the evidence for their accuracy.
Photo of someone taking a lateral flow test
Lateral flow antigen tests can process COVID-19 samples quickly without the need for laboratory equipment

Alamy Stock Photo

It is estimated that around one-third of people with COVID-19 do not have symptoms and could be spreading the virus unknowingly. To help tackle this, the government has rolled out rapid lateral flow antigen tests that can detect cases in under 30 minutes, meaning those who have a positive test can isolate immediately.

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