Will low-dose aspirin treatment prevent PRP for hair loss from working?

I think that the reason you are placed on aspirin therapy is more important than hair loss. However, you could consider laser therapy which is safe to use on patients currently taking aspirin and in my experience helps to slow down hair loss in a higher percentage of patients than PRP.

aspirin will not affect PRP, but adding acell makes prp work way better. I suggest you start that plus restorsea spray, viviscal, and topical growth factors anteagemd ampules (see link).

I suggest a formal consultation as there are a combination of treatments that can be done to improve har loss.  Oral finesteride has very little to no side effects in the majority of people; PRP/platelet-rich plasma + stem cells like A Cell help regrow hair and slow down the thinning process; rogaine and restorsea spray should be used daily; oral viviscal helps keep nutrients high in the follices as well.  Transplantation is a last resort but works early in the aging process as well.  A formal consultation and combination treatment is needed.  Best, Dr. Emer.