On the other hand, more and more people appear to be navigating negative lateral flow ... only detect it 58% of the time). This is demonstrated beautifully here by having two negative tests ...

Lateral flow tests (LFTs) are very good at detecting people most likely to spread Covid-19 and positive results should be trusted, say University College London researchers. When LFTs were ...

Later that evening her symptoms began - a mild headache and a runny nose ... PCR test processed in a laboratory. An analysis of the lateral flow kit used in Liverpool showed it only detected ...

said that a runny nose and headache "are symptoms of many infections, but may be the first and only symptoms of COVID-19." Anyone with these symptoms should use quick lateral flow tests "for a few ...