What antibody tests are needed and why. Instructions

Russian laboratories offer several options for testing for antibodies to the covid-19 pathogen. Which one to choose, in what cases what is needed and why it is not necessary to compare tests from different laboratories - RBC understood

Main types of tests

What are antibodies and what are they

How the tests differ and what are their problems

What should be the result of the test

Are antibody tests required for vaccinations?

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