Originally Posted by
WilcoRoger
Funnily enough, the antigen showed negative, while the PCR at LGW was positive. Could also be that the PCR showed post-covid results, as the pax had slight symptoms around Xmas (but home tests all showed negative)
I've understood that the antigen test is a lot less reliable, and that if you suspect covid and want a negative result, it's definitely your best bet.
Odds are that before you have symptoms, an antigen test gives you a negative while a PCR might be positive. And after you're helathy again, the antigen turns negative sooner than the PCR, which can be positive for weeks (but not necessarily).