For the Wiki - testaakorona.fi we can forget the 15 minutes for antigen (even though it's on their website) About week ago they said 2 hrs at the test point, but in fact it was about 10 hrs (incl. that Kanta had some downtime that day) Luckily there was no rush.
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)