I have had a couple of friends attempt to donate blood recently who were turned away because the machines weren’t able to draw from them.
Tubing issues were blamed first.
Eventually, the staff told them they couldn’t donate because the flow was being blocked by clots.
In both arms.
These people are all under the age of 35, by the way. And were under the impression they had no health issues.
I contacted a local blood bank in my state and asked if they could set up a family blood bank for us. I never got a response. None of us got the jab. But I would be afraid if I needed blood. Don't want the vaxxed blood - only pure blood.