I’d heard rumblings that you could give blood through the American Red Cross, and they’d test your blood for antibodies. Worth mentioning: The Red Cross says it’s a perfectly safe time to donate, despite COVID-19. How to interpret your resultsMine said, “COVID-19 Test Result: NEGATIVE.” And I blanked for a second, as in, “Negative? Learn more about COVID-19 antibody testing.” (It’s like the Red Cross knows that we’re not all health experts). The Red Cross could use your donation one way or the other.