I got a whole bunch of free tests when a local school closed for the summer. Test say that they expire 12/22 and they aren't on the list in the link above. I'll use them anyhow. I have little confidence in home testing as several of the omicron variants don't necessarily react with the test kit materials. Happened to me this spring. DH tested positive for covid when at a doctor visit for something else. He wasn't too ill and they gave him an antiviral and he was on his feet in a couple of days. I was sick as a dog, sicker than when I had Covid in December, but kept testing negative so kept going to work (department chair said I HAD to work, even though it was clearly against University covid policy). About a month later I was walk-in care for something else. Doc noticed I was congested so swiped me "just in case" (I felt fine) and sent it out for PCR and sure enough, it was positive. She said I most likely had Covid when DH did, but the antigen tests don't always pick up some of the more recent variants. I feel badly for anyone who was around me when I was sick (yes, I masked and distanced) but it was nice to have 5 "mandated" days off when I wasn't really ill!