Are they just freefloating in blood? Capillaries are tiny and I thought micro plastics were closer to 1mm than 1micron, despite the name. Capillaries are 8-10microns.
I'm curious if the donated blood is processed in a way that removes those microplastics.
Probably not, but if you're in need of a blood transfusion you have more immediate concerns.
Any references for that? What about just drinking a lot of water so you have to pee more often?
If there are any synthetic textiles in your home, it's probably a lost cause; plastic dust everywhere. Every time you eat, drink or breath, you'll be taking more in.