Great. As long as a medical board is making the decision I'm good with it. If the NIH (for example) hasn't approved it as a therapy then it wouldn't be "illegal" necessarily. It would not be an approved treatment. Maybe just a miscommunication. *Edited to better explain my position*
PRP costs ~$600 vs $6000 iirc. Despite 20+ years of approval in the US PRP isn't covered by insurance because of lack of "evidence." Well my evidence is it's the only treatment to get my knees back on the soccer pitch and basketball court. Wish I could afford the cells.
