Going back for in the needle stick

So I decided to donate blood. Not because January is National Blood Donor Awareness Month, or because I’m some sort of saint who wants my O+ blood type to save everyone’s life, or that I’m trying to join the “gallon club,” or that it’s the noble thing to do. I did it because they are doing antibody testing for COVID-19 as part of the draw. Kind of a weird reason, I know.