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 wonder if the utilities and the tax man and the mortgage company and the car loan company and the internet provider and the cell phone provider and the grocery store and the gas station and the clothing store and the travel agent will all accept "volunteer time" as sufficient payment.