No, it is not satire, it is an actual statement by the American Red Cross's official Twitter account. The statement was made in reply to a question by a Twitter user.
We don't label blood products as containing vaccinated or unvaccinated blood as the COVID-19 vaccine does not enter the bloodstream & poses no safety risks to the recipient. If you have safety concerns about potential blood transfusions, please speak with your medical care team.— American Red Cross (@RedCross) September 14, 2022
Multiple Twitter users were stunned by a blatant lie coming from the American Red Cross and demanded to remove the dangerous misinformation.
In case the Red Cross decides to remove it, here are some screenshots for your records: