JACKSONVILLE, Fla. People donating blood can now be tested for the COVID-19 antibodies through OneBlood. Within about 48 hours, people eligible to donate blood can find out if their immune system has produced antibodies to the novel coronavirus, regardless of whether they had symptoms. We want to avoid a shortage, said Susan Forbes, senior vice president of corporate communications for OneBlood. "At first, I was crushed and then I was mad.Forbes the delay was because the organization had to update its computer systems to reflect the new donor eligibility criteria. These individuals can donate blood as long as their trip was more than three months ago.