To find out an individual's immunity against hepatitis B, we use standard serologic testing [1]. With COVID-19, the FDA[2] and CDC[3] state that you "should not interpret the results of your SARS-CoV-2 antibody test as an indication of a specific level of immunity or protection from SARS-CoV-2 infection".<p>Which methods can be used to evaluate a person’s level of immunity or protection from COVID-19? How do I know if my 2nd (or 3rd) dose worked? Are there any ongoing trials (for immunity tests)?<p>[1] https://www.cdc.gov/hepatitis/hbv/pdfs/serologicchartv8.pdf<p>[2] https://www.fda.gov/medical-devices/safety-communications/antibody-testing-not-currently-recommended-assess-immunity-after-covid-19-vaccination-fda-safety<p>[3] https://www.cdc.gov/vaccines/covid-19/clinical-considerations/covid-19-vaccines-us.html?CDC_AA_refVal=https%3A%2F%2Fwww.cdc.gov%2Fvaccines%2Fcovid-19%2Finfo-by-product%2Fclinical-considerations.html
There is a test for antibodies which medical professional have to go through in some cases. You will only get a binary result though if you have protection or not.
They give you a paper card that then people ask to see to prove you've been vaccinated.<p>Any biological effects the vaccines have are essentially irrelevant, they're a tribal sign and "sacrifice ritual".