4 ms·
> antigen tests aren't going to show covid until a couple days after symptoms start (typically) This is false? It was definitely false pre-Omicron and my under
by rpearl 5y ago
> antigen tests aren't going to show covid until a couple days after symptoms start (typically)
This is false? It was definitely false pre-Omicron and my understanding is that it's still false.
https://www.medrxiv.org/content/10.1101/2022.01.08.22268954v2.full-text https://www.medrxiv.org/content/10.1101/2022.01.08.22268954v...
> sensitivity was 97.6% (95% CI 95-100%) for persons with symptoms.
- toolz 5y agoMaybe you're saying my claim is exaggerated? Which I agree my wording wasn't precise. With antigen tests you'll have far more false negatives early on than later. The sweet spot seems to be a couple of days after symptoms. If you're not saying that, I'm not sure what claim you're making that is contrary to my own.
- astrange 5y agoThe antigen test is supposed to show if you're currently spreading covid, which is a little different from experiencing it. You'll have symptoms for a while after you stop being infectious too. With omicron the gap between them is a day or two smaller IIRC.
- dfadsadsf 5y agoPersonal experience - I started testing positive 1 day after onset of symptoms and my wife 5 days after. We started having typical omicron symptoms at the same time (low grade fever, etc)