Indeed, there's also considerable variability in the different lateral flow tests. If you don't read the instructions then you may not work out the differences

Indeed, there's also considerable variability in the different lateral flow tests. If you don't read the instructions then you may not work out the differences when the next set come along. In the UK we have, amongst others I'm sure, the NHS branded boxes, Flowflex, and Orient Gene. Some require swabbing nose and throat, some are just nasal swabs. Some require 2 drops onto the device, some require 4. Some require a certain amount of time to be left in the buffer solution, others just a set of steps of pushing/turning/squeezing the swab in the buffer. Some require waiting 30 minutes (minimum), some are 15 minutes (minimum) and 30 minutes maximum. etc.