LTFs

[Yellow85]

www.google.co.uk/amp/s/news.sky.com/story/amp/covid-19-rapid-lateral-flow-tests-95-effective-at-detecting-covid-if-used-when-symptoms-start-study-shows-12355179

Interesting study in the effectiveness of LTFs.

Does it not depend who took the sample?
I'd read that people doing the test on themselves had a lower success rate than a sample taken by a trained nurse/doctor, etc

Perhaps. It also seems that timing is a huge factor too. I did read somewhere that PCRs are best for telling you wether you are infected, but LTFs are good at pinpointing wether you are infectious.