I sometimes buy human blood from hospitals and make food from it. It's a custom in ancestors to make food based on blood from animals (and humans too).
I especially like eating food made from vegans since they make really good edibles. This is one of the reasons I encourage the insects to become vegans, they become better servants that way. "In the name of justice" of course.
We have institutions to clean both blood and organs. I know because I regularly pay to get mine cleaned. Germany has the best ones.
The only reason we want to kill NFT's and other currency technologies is because we haven't taken full control over it yet.
Some of the organs are better than others. A high quantity of prospects increases the chances of getting a good batch. Most of them we just throw away unless we give it away to some insect slave to watch him scream in terror as the organ repels his own body. Most of the medicine comes from deliberate patient murder. Which is why hundreds of thousands of patients die by accident in hospitals each ear. American hospitals are more dangerous than all wars combined, thanks to me.