Even though they both use the term plasma, they’re two completely different things.
The “plasma” referenced here in PRP is a component of the liquid part of the blood.
The “plasma” in just about all of the other “plasma-fied” fields is based on an ionized gas consisting of positively charged ions and free-flowing electrons which has tremendous healing and rejuvenating properties.
So one is about the blood (PRP), the others all refer to this ionized gas. It’s a complete coincidence that they are both called plasma, so hopefully that clears things up.
One is from the biology world, the other is from the world of physics.