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A comment on New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity. Parent comment

Re:New Abbott SARS-CoV-2 antibody test has 99.90% specificit... by CydeWeys on Tuesday May 12, 2020 @11:30AM (#23155019)
Yeah, but I'm in NYC. Since some inflection point in March the vast majority of patients presenting with these symptoms do in fact have COVID-19. Being the global epicenter of the pandemic will do that :/
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Re:New Abbott SARS-CoV-2 antibody test has 99.90% specificit... by Marsymars on Tuesday May 12, 2020 @11:41AM (#23155184)
Slim majority, not vast - NYC test positivity rate peaked at around 55% IIRC.
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Re:New Abbott SARS-CoV-2 antibody test has 99.90% specificit... by CydeWeys on Tuesday May 12, 2020 @01:03PM (#23156371)
A lot of those tests were people not presenting with COVID-19 symptoms though. Think of all the asymptomatic people who were getting tested; that group had a much lower test positivity rate than 55%, thus bringing the average down. For people who had all the right symptoms, it was higher than 55%.
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Re:New Abbott SARS-CoV-2 antibody test has 99.90% specificit... by Marsymars on Tuesday May 12, 2020 @02:34PM (#23157804)
That effect doesn't seem like it would skew a larger difference between Alberta and NYC test positivity rates. If anything, that would depress Alberta test positivity rates more than NYC ones, since we've got more spare testing capacity for people without all the right symptoms.
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Re:New Abbott SARS-CoV-2 antibody test has 99.90% specificit... by CydeWeys on Tuesday May 12, 2020 @03:13PM (#23158372)
What does Alberta have to do with anything?
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Re:New Abbott SARS-CoV-2 antibody test has 99.90% specificit... by Marsymars on Tuesday May 12, 2020 @05:24PM (#23160072)
It's the "we" (I live in Alberta) I was originally referring to with the 3.5% test positivity rate.
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