What does this mean for the blood supply? I surely don’t want tainted blood.
The only way to avoid that with certainty is to give your own blood for any upcoming medical procedures. Of course, if there’s an accident well... it’s a crap shoot then I would think.
You can set for a Autologous blood transfusion if you have a procedure scheduled. This has to be set up in advance.
https://pubmed.ncbi.nlm.nih.gov/994552/
“What does this mean for the blood supply? I surely don’t want tainted blood.”
Nothing it’s fake crap meant to make a buck.