PRP is actually bactericidal (a substance that kills bacteria). While platelets are increased in PRP processing so are leukocytes (white cells that fight infection) over 6 to 8 times. This is one reason why PRP is so effective in wound healing. Not only do the increased levels of leukocytes enable the body to fight off infection they have a duel purpose. After platelets initially release their growth factors, leukocytes produce a secondary release or growth factors to promote healing.