Antigen testing: Use it as a screening test and if positive go for a PCR.
I can only speak from the experience we have had:
Our experience of antigen testing meant our household contained Covid. Our son hadn’t been home in a while, came home, didn’t feel well, decided to do an antigen test “before we visit Granny”, his decision.
We have antigen tests in the house for this very occasion.
Our thoughts are it is a good idea to keep them in the house to have on hand. Much like we keep paracetamol, ibuprofen, cider vinegar, lemons, honey, turmeric, ginger, garlic, many herbs, a variety of vitamins (vitamin C and D for certain) and good old lemsips in the house at all times.
He tested positive. We all did one, we were negative. He isolated. He was really good at it in fairness to him. His PCR came back positive. We continued with antigens.
Our youngest had a PCR because she was not vaccinated – we followed the rules. Negative. We didn’t get it and he recovered. We did all the staying at home and isolating as a recommended.
That is our experience of using antigen tests. We are glad we had them in our house and that our son had the wherewithal to decide of his own accord to test before visiting Granny.
Our daughter has come home now, she did one before coming home to us. Negative.
That’s it. That’s the story. Nothing complicated. Nothing exciting. Just our experience.