Yes it would be easy, if we had planned for it ahead of time. Antibodies fade over time, so you can't do an antibody test much later. And neither antibody or vi

Yes it would be easy, if we had planned for it ahead of time. Antibodies fade over time, so you can't do an antibody test much later. And neither antibody or viral tests would have been guarded for anti-spoofing or external verification. Some people may have just gotten a text or phone call from their health care provider, or used a self administered test.