another one is, have you had allergies since you last donated?
i know some people just say to lie for every question. technically they screen every donation, but it’s not supposedly a reliable test for something like HIV.
i’m pretty sure i’m just allergic to reality. sometimes just constant sneezing, even when i’m on an antihistamine.
obviously best to just be aware of one’s behavior and risk factors. do they do this just avoid liability?
cameras that cover the microscope and it put in a screen was a godsend for folks with poor vision in the field (and many in the field wear glasses.)