When can I donate blood after receiving a COVID-19 vaccine?
>The Red Cross is following FDA blood donation eligibility guidance for those who receive the COVID-19 vaccination. Deferral times for donations may vary depending on which brand of vaccine you received. If you’ve received a COVID-19 vaccine, you’ll need to provide the manufacturer name when you come to donate. In most cases, there is no deferral time for individuals who received a COVID-19 vaccine as long as they are symptom-free and feeling well at the time of donation.
https://www.redcrossblood.org/local-homepage/news/article/covid-19-vaccination-guide-blood-donation.html