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You can apply at https://covidserum.com/ to register with Mount Sinai and at top left corner click tab to get tested in most N.Y. Jewish neighborhoods
There is this from a private organization
https://covidplasmasavealife.com/
« Last edited by simple26 on April 20, 2020, 03:08:22 PM »

Author Topic: Donating blood/plasmas  (Read 12887 times)

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Re: Donating blood/plasmas
« Reply #30 on: April 20, 2020, 11:49:58 PM »
A close relative of mine tested for Covid-19 and it came back negative. He managed to get an Anti Body test and it came back, as him having the Anti Body.

Not sure which test was inaccurate but most likely it was the original Covid test. He had the  symptoms.

I am wondering was % of test are inaccurate.
The Covid tests are significantly less reliable than the antibody tests, but they can both have been accurate. The Covid test has to have been administered while he was shedding to test positive, while antibodies can have built up at any moment from when he contracted the virus and on.

So antibody test =had it at some point. Covid test = contagious at that time.
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Re: Donating blood/plasmas
« Reply #31 on: April 20, 2020, 11:51:31 PM »
The Covid tests are significantly less reliable than the antibody tests, but they can both have been accurate. The Covid test has to have been administered while he was shedding to test positive, while antibodies can have built up at any moment from when he contracted the virus and on.

So antibody test =had it at some point. Covid test = contagious at that time.
This can mean, many people testing negative actually had/have the virus and the actual numbers are even more skewed.

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Re: Donating blood/plasmas
« Reply #32 on: April 20, 2020, 11:52:18 PM »
The Covid tests are significantly less reliable than the antibody tests

Source?

NYT is saying that many of the rapid antibody tests are of doubtful reliability because the FDA was too quick to approve 90 companies for producing these tests without adequate oversight.
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Re: Donating blood/plasmas
« Reply #33 on: April 20, 2020, 11:53:15 PM »
This can mean, many people testing negative actually had/have the virus and the actual numbers are even more skewed.

This is likely the case. Very possible some of the infection tests had 20-30% (or higher?) false negative.
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Re: Donating blood/plasmas
« Reply #34 on: April 20, 2020, 11:55:49 PM »
This can mean, many people testing negative actually had/have the virus and the actual numbers are even more skewed.
Theoretically. Then again, itís self understood that many people in Lakewood who have not tested positive have/had it, including asymptomatic. Certainly a large percentage of people showing symptoms have had it. You can never put too much faith in negatives, since they can miss the virus, although theyíre definitely largely accurate unless someoneís doing something really wrong.

In summation: there can definitely have been many false negatives, but the large majority were accurate, so anecdotal evidence doesnít hold up here. Also, your story doesnít necessarily contradict the accuracy of either test, though it certainly raises the possibility.
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Re: Donating blood/plasmas
« Reply #35 on: April 20, 2020, 11:56:37 PM »
There also a letter floating around signed by a ton of Drs in the community saying that the antibody tests are extremely inaccurate, giving them out is a disservice people will think, if they supposedly had it they can relax restrictions which would be extremely dangerous

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Re: Donating blood/plasmas
« Reply #36 on: April 20, 2020, 11:57:56 PM »
There also a letter floating around signed by a ton of Drs in the community saying that the antibody tests are extremely inaccurate, giving them out is a disservice people will think, if they supposedly had it they can relax restrictions which would be extremely dangerous
main problem i heard with antibody test is that it will give you a false positive if you had any other type of coronavirus (some flus for examplre)

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Re: Donating blood/plasmas
« Reply #37 on: April 21, 2020, 12:02:01 AM »
Source?

NYT is saying that many of the rapid antibody tests are of doubtful reliability because the FDA was too quick to approve 90 companies for producing these tests without adequate oversight.
Donít have links now but Covid tests have been shown to be quite inaccurate, relatively speaking, and the official antibody tests from the 5 top labs (which the Mayo Clinic uses) are supposed to be 99.5% accurate
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Re: Donating blood/plasmas
« Reply #38 on: April 21, 2020, 12:03:25 AM »
are there false positives or just false negatives? Wondering about false positives for someone who was sick a month ago and is still testing positive, does that mean they are still contagious?
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Re: Donating blood/plasmas
« Reply #39 on: April 21, 2020, 12:04:10 AM »
main problem i heard with antibody test is that it will give you a false positive if you had any other type of coronavirus (some flus for examplre)

Source?
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Re: Donating blood/plasmas
« Reply #40 on: April 21, 2020, 12:05:30 AM »
Donít have links now but Covid tests have been shown to be quite inaccurate, relatively speaking, and the official antibody tests from the 5 top labs (which the Mayo Clinic uses) are supposed to be 99.5% accurate

Right, but the rapid antibody tests anyone can take at urgent care arenít the same.
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Re: Donating blood/plasmas
« Reply #41 on: April 21, 2020, 12:05:50 AM »
are there false positives or just false negatives? Wondering about false positives for someone who was sick a month ago and is still testing positive, does that mean they are still contagious?
False positives are much less likely, especially among a large group that do have it
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Re: Donating blood/plasmas
« Reply #42 on: April 21, 2020, 12:06:12 AM »
Source?
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Re: Donating blood/plasmas
« Reply #43 on: April 21, 2020, 09:41:30 AM »
Donít have links now but Covid tests have been shown to be quite inaccurate, relatively speaking, and the official antibody tests from the 5 top labs (which the Mayo Clinic uses) are supposed to be 99.5% accurate
I wold think it would depend where he did the antibodies test if it was just a random thatís what everyone is warning about but if done with a hospital Mt Sinai/Mayo I would assume they have accurate tests

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Re: Donating blood/plasmas
« Reply #44 on: April 21, 2020, 11:37:34 AM »