And many people will be wondering what it means if they see a very faint line on their lateral flow tests. Everyone knows the thick red lines next to the C and the T means you are positive.

What does a positive Covid test look like? The result of a lateral flow test is determined by the letters ‘C’ and ‘T’, which sit above the ‘S’ section at the bottom where your sample goes.

Accessible Lateral Flow Assays: Test to Treat, Test to Protect From development to implementation, Rosanna Peeling discusses the importance of rapid tests for public health.

Should I report a negative lateral flow result? The public is instructed to report every result from a lateral flow test, no matter whether its positive or negative.

Reliance on lateral flow tests and delays with PCR results is allowing coronavirus to spread, writes Charlotte Lynch.