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New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

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Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#131

Earlier quoted context omitted.

people say that because .25% of the population in NYC are dead from covid. we dont see those numbers here -- if it was widespread in feb, what caused the discrepancy?

different strains?

afaik there havent we havent observed major functional mutations in the virus

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#132

Earlier quoted context omitted.

people say that because .25% of the population in NYC are dead from covid. we dont see those numbers here -- if it was widespread in feb, what caused the discrepancy?

> people say that because .25% of the population in NYC are dead from covid Source? I can only get a rate that high by taking the highest death count I can find (which involves extrapolations to attribute deaths to Covid-19) for New York State and dividing it by the population of New York City (which is clearly invalid).

hm, care to explain more? that's exactly how I think about it. Total deaths in NYC attributable to covid (~20k) over the total population (8.5M) = ~.25%. In my mind this is a very easy lower bound to estimate, what am I missing here?

In anycase, even a rate of ~.1% would be absurd given ~20% of people are testing positive by antibody tests.

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#133
This is encouraging. Two negative viral tests and a positive antibody test, and people should be able to get an ID that says they're exempt from movement and mask restrictions. (To discourage faking this, getting that ID should also turn eligibility for the Emergency Care Benefit, since they can work safely.)

There's still argument over how long immunity lasts, but it has to be at least two or three months, or there would already be widespread (large numbers) reports of people getting the disease more than once. So, for now, IDs could be good for three months. They can be extended later as more info comes in.

First step in the US should be to test first responders in NYC. NYC already has maybe 21% antibody-positive people, and those on the front lines are probably higher. Knowing who's immune will be a great relief to them.

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#134

Earlier quoted context omitted.

people say that because .25% of the population in NYC are dead from covid. we dont see those numbers here -- if it was widespread in feb, what caused the discrepancy?

I guess we need to know the total number of cases to figure out what the deaths mean, and until everyone has gotten an antibody test, we can't know that total number. To make the numbers work for the "weird cold" in early February case, I guess we have to work backwards. Assume that when we went into lockdown was the actual peak, 8 million people in New York City had COVID-19. That means that there is one death for e…

That's a great point although obviously its very hard to estimate something that has a horizon of atleast a month. the bay area did shut down quite a bit earlier, it could be that the lack of deaths is simply due to a better response.

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#135

I took this test this Friday (Quest Direct) in NYC and tested negative. In late Feb. I had a 'flu like symptoms' with fever and massive headache for few days. What worried me later is that I had the 'can't taste anything' symptom a week later. No coughing though. If you read online, you see people swear they had it at some point this winter. So, if you had a 'flu like' symptoms in Feb or early March, perhaps it was j…

If the government was serious about homeland security and restoring the economy they would be subsidizing testing full boat.

The government has made it clear that this is about politics and business, not safety or public health.

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#136

I took this antibody test through LabCorp on Friday and tested positive. I have been in strict (see: paranoid) isolation with one other person since March 7 and haven't felt sick or anything close to it since then. I did have what I thought was a strange flu/cold early February with a sore throat, post-nasal drip, wildly varying body temperature, and lower back pains. In hindsight those are COVID-19 symptoms. the per…

Here's my opposite anecdote: I live in NYC and in mid-March I had all of the headline COVID-19 symptoms, including most notably shortness of breath (which I've never before experienced in my life short of high altitude hiking). I got the Abbott test two weeks ago, and the result came back negative. I was so sure I'd had it, but now it's looking like maybe I didn't.

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#137

Earlier quoted context omitted.

Good anecdote. I also had a "weird cold" in February with symptoms that are unusual for me but typical of COVID-19, and have been waiting to get the antibody test. I kind of expect it to turn out the same way. (Otherwise, I would really like to figure out what the "weird cold" that everyone had in February was. Because it sure was weird, and everyone I know had it.)

took this test this Friday (Quest Direct) in NYC and tested negative. In late Feb. I had a 'flu like symptoms' with fever and massive headache for few days. What worried me later is that I had the 'can't taste anything' symptom a week later. No coughing though. If you read online, you see people swear they had it at some point this winter. So, if you had a 'flu like' symptoms in Feb or early March, perhaps it was jus…

Similar story here, had COVID-19-like symptoms in mid-March, but the Abbott test (administered at CityMD) came back negative.

It makes me wonder what exactly is going on with this test. Do some people not produce antibodies? Is it overly specific to one strain of the virus and other people in NYC got a different strain that doesn't produce compatible antibodies? Was there some non-COVID-19 respiratory infection that hit NYC at around that same time that went under the radar? Is this test somehow just not as good as we think it is?

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#138
post #9

Earlier quoted context omitted.

In the US, they're $119 through Quest Diagnostics. In some areas and with some insurance companies, that cost is fully covered.

Do you know that all the Quest tests are mfg. by Abbott? I didn't see that anywhere, they didn't seem to show which test manufacturer you got when you receive results either.

I believe Quest uses the Roche test.

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#139

I took this antibody test through LabCorp on Friday and tested positive. I have been in strict (see: paranoid) isolation with one other person since March 7 and haven't felt sick or anything close to it since then. I did have what I thought was a strange flu/cold early February with a sore throat, post-nasal drip, wildly varying body temperature, and lower back pains. In hindsight those are COVID-19 symptoms. the per…

The weirdly varying body temperature bit is what most folks I know who were symptomatic had at one point. Not a typical cold or flu response. Side note: Anytime the rest of my sense of smell wants to wake up would be nice. Sooner would be better.

I had all the COVID-19 symptoms including the weirdly varying body temperature, and I'm in NYC, but my Abbott test (taken 1.5 months after symptoms) came back negative. Who knows what's going on.

Re: New Abbott SARS-CoV-2 antibody test has 99.90% specificity and 100% sensitivity

#140

Earlier quoted context omitted.

different strains?

afaik there havent we havent observed major functional mutations in the virus

The Strain that was seen in ny was more deadly than the strain seen on the west coast. And I’m not sure how many others are out there.
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