That's a negatory ...

We've got visitors for the next couple of days, although they're not staying with us. Doing the socially-responsible thing and checking my COVID-19 status, even though both H and I have been running a hint of a cold for a couple of weeks.
I suppose there's a tendency towards lab practice by placing the test kit on a glazed tile. This is a souvenir from a visit to Vancouver BC in October 2019 (BC).