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Had antibodies and now none



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amother
OP


 

Post Wed, Jun 24 2020, 1:02 am
My friend was tested and she had antibodies . A month later she went to be tested again and now she has no antibodies. Does that mean she is at risk for getting it a second time?
Would anyone know?
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happyone




 
 
    
 

Post Wed, Jun 24 2020, 1:16 am
many people retesting are losing antibody levels or showing decrease in levels. Doctors are not sure what that really indicates.
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Angolama




 
 
    
 

Post Wed, Jun 24 2020, 1:26 am
amother [ OP ] wrote:
My friend was tested and she had antibodies . A month later she went to be tested again and now she has no antibodies. Does that mean she is at risk for getting it a second time?
Would anyone know?


A) Some tests are better than others, but some of the tests had a very high incidence of false positives, to the degree that the results are statistically nearly irrelevant.

B) Current research shows that antibody levels do drop off significantly, especially with people that were not severely ill with COVID-19. It is possible that her antibody levels were low previously, but high enough to be considered positive, and now they are too low to be considered positive.

C) You are asking whether she is immune or not. Given the inaccuracy of the tests, and the fact that we do not have data to predict reliably how long antibodies last or whether people have been reinfected, she should regardless be conducting herself as if she was not immune, and practicing proper social distancing and utilization of respiratory protective gear when possible.

That being said, the likelihood appears to be that if she did not get severely ill the first time, she will likely not get severely ill a second time. In addition, there have not really been documented cases of a person catching it again. (There have been reports of people testing negative and then positive. It is unclear whether these are reinfections or resurgences. More info and data on this is needed. As of now, it is an unknown.) Therefore, although she should be cautious, the risk may not be incredibly high.

Obviously, all this should be discussed with a competent medical authority.
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amother
Lilac


 

Post Wed, Jun 24 2020, 1:51 am
The tests are not accurate. I know people that were tested twice the same day or day apart and had different results!!
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