>Would a positive result indicate that the member had contracted COVID-19 or would it indicate that an antibody was present before the onset of the COVID-19 epidemic?


One cannot make antibodies to the virus particle SARS Cov-2, which is responsible for the illness COVID- 19,  unless they are exposed to the virus. Nobody in the world had antibodies before the outbreak.  

Bill Hesbach
Cheshire CT

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