COVID 19 ANTIBODY TEST RESULTS

[Grandpa Drudge]

"The result was positive for SARS-CoV-2 antibodies with a "Semi-Quant Total Ab" of 506.8 U/ml. And there's the rub...what does this mean? "

Actually, if you have had any of the "Spike Protein Vaccines" that WILL produce a positive result on this test, but does NOT necessarily indicate you have actually had Covid-19.

I had the same test from LabCorp, with "negative results", and a similar one from Quest, also negative. (Both "Semi-Quant Total Ab")

They CLAIM: Can I use a semi-quantitative COVID-19 antibody test to determine my level of immunity?

A semi-quantitative antibody test can help identify individuals who have developed an immune response after exposure to COVID-19 or vaccination. However, it should not be used to determine the level of immunity you have. However, evidence is still being collected to determine if antibodies provide protective immunity against SARS-CoV-2 (COVID-19) specifically. Follow up with your healthcare provider for additional guidance on how to interpret your test results.

Actually neither of these test for immunity (antibodies resulting from recovery from prior infection), but it turns out that neither of those tests look for“Qualitative detection of high affinity antibodies to the nucleocapsid (N) protein of SARS-CoV-2"

1: I understand from a Consumer Labs review that labcorp offers the Abbot SARS-CoV-2 IgG nucleocapsid 100% sensitive 99.6% specific or the Roche Elecsys Anti-SARS-CoV-2 IgG nucleocapsid 100% sensitive 99.8% specific. I assume either one of these may be the labcorp SARS-CoV-2 Antibodies, Nucleocapsid 164068, which is really the test I expected to receive in accordance with the description shown above. Specifically, that “If you have been exposed to the virus that causes COVID-19, your body typically produces antibodies as part of the immune response to the virus.”

2: It turns out that the test I got was labcorp test number 164090, which specifically tests for antibodies to the spike protein produced by the vaccine, which I do not have, as I have not been (nor plan to be) vaccinated. It also comes with a specific disclaimer, as follows:
“Values generated with this assay cannot be used to determine whether or not an individual has developed protective immunity against infection and cannot be directly compared to other assays until a universal standard is established for assay calibration.”

3: It is therefore clear that this test (164090) is not appropriate for the purposes stated above

The intended use of 164090 is: “Semi-quantitative detection of high affinity antibodies to the receptor binding domain (RBD) of the spike (S) protein of SARS-CoV-2. Intended for use as an aid in identifying individuals with an adaptive immune response to SARS-CoV-2 indicating recent or prior infection. This assay also can be used to detect antibody responses induced by currently available SARS-CoV-2 vaccines.” “Values generated with this assay cannot be used to determine whether or not an individual has developed protective immunity against infection and cannot be directly compared to other assays until a universal standard is established for assay calibration. Results from this test should not be used as the sole basis to diagnose or exclude active SARS-CoV-2 infection”

I actually need labcorp test 164068, which should properly answer the above stated purpose for getting this test.

The intended use of 164068 is: “Qualitative detection of high affinity antibodies to the nucleocapsid (N) protein of SARS-CoV-2. Intended for use as an aid in identifying individuals with an adaptive immune response to SARS-CoV-2 indicating recent or prior infection. This assay can be used to differentiate between antibodies elicited due to natural infection versus vaccination.” Additional limitations of 164068 is: “This assay will not detect antibodies elicited by currently available SARS-CoV-2 vaccines.”

I had my doctor order LabCorp provide this more appropriate test (164068) for my needs.

There is more detail in this prior post from me in an earlier thread.

I had the same test from LabCorp, with "negative results,

https://freerepublic.com/focus/f-chat/3996481/posts?page=32#32