Had a horrible upper respiratory infection back in November. Even had a blood test done. Couldn't figure it out. My doctor had my blood retested last week. The new test shows covid antibodies. Just saying....
@ericthegreat, could be, also could be that you were asymptomatic when you did actually get covid
@ericthegreat, based on what CJWJ said was it a newer blood sample? -i have no idea how long a blood sample is viable for-
@voided sanity, well that depends on whether you're asking how long their shelf life is or how long it takes for the results to no longer reflect the person they're taken from.
The answer to the first question is 3 days without cold storage, and several months with cold storage, though cold storage damages the already dying blood cells.
The answer to the second question is anywhere between a single day and months, depending on loads of factors. As far as bacteria goes, if the bacteria were dormant or not present at the time of the first blood test then it'd have been impossible to detect anything, since dormant bacteria and viruses don't have any external identifiers so dormant Covid looks a lot like a dormant flu or cold, which is very normal to have.
It's also worth noting that because everything in the blood starts dying as soon as it's taken out of the body, a blood sample is only reflective of the exact time in the person's life when it was taken.
@Your Waifu, thank you for clearing that up. So if I read that right they did a redraw because if they put it in cold storage and retested that it would have shown covid. Not the antibodies? Do I have that right?
@voided sanity, if they retested the sample from cold storage, it would be more or less the same as when they initially tested but with more damaged cells, as all freezing it does is halt cell decay and cell activity. The reason they keep blood samples isn't because the old blood sample changes, but because they can compare any new blood samples to the old blood sample to see what's changed. However, in this case it could also be that because Covid is going around they re-examined the blood sample and discovered that what they thought was a weird strain of flu was actually Covid.
@Your Waifu, it's a frozen snap shot of what the person's state of being was -in relation to what a blood sample can tell- so if they knew what they were looking for they might have seen the anti bodies in there old sample? Not trying to be a dick just don't want to be ignorant. And I'll just ask OP
@ericthegreat, I've got to ask. Did they get a new blood sample or test the one they had before?
@voided sanity, they wouldn't have seen antibodies, because nobody had antibodies for Covid yet at that time. They might've seen antigens, which are what white blood cells take from bacteria to make antibodies, but i think it's more likely that in the earlier sample the Covid was dormant and not presenting antigens, which would be why it would look like a regular flu, as all they'd be able to see in the earlier sample is the cell wall. In the newer sample it probably did have visible antigens, and comparing the two samples knowing there was COVID present would allow them to determine how long he's had it.
@Your Waifu, like using radio to triangulate a position? And I'm guessing you are in a medical occupation?
@voided sanity, that's a decent enough analogy. And no, I just like learning about random subjects on the internet, and some of those just happen to be doctors explaining how medical stuff works. I definitely wouldn't consider myself an expert.
@Your Waifu, fair enough. I just find it very interesting as a hospital nearby has seen positive results with getting blood or plasma from people who have antibodies to it and giving it to people who are in critical condition.
@voided sanity, well that sounds like a smart idea. After all, with the disease being as new as it is, nobody had any antibodies for it yet, so by taking blood from people who've already recovered and developed them they're giving people who still have Covid a jump start in production, so to speak. Once one white blood cell has learned how to make antibodies, almost all the others in the body will permanently learn how to do the same thing.
@Your Waifu, yeah. That's why I've been thinking about donating. I'm most likely o- and there's a good chance I was exposed to it given my job and location.
@voided sanity, that sounds like a solid idea. Unfortunately, I'm pretty sure I'm AB+ or one of the types close to it, so my blood is fairly useless. I'm also not sure I've got it yet, as I haven't really been around anyone since the start of the quarantine.
@Your Waifu, last I heard most places are hurting for blood real bad. So to sum up this comment chain would be donate blood or plasma to your local centers kids
So what you’re saying is that we need to stay very far away from u even in our comments
@voided sanity, used the original blood to test for covid. Positive. Drew more in April to test and found antibodies.