Platelet-rich plasma (PRP) injections for tennis/golfers elbow

I have chronic tennis and golf elbow from playing golf. In truth, I have felt the tennis elbow all my life off and on, before I even started playing golf, but now I play golf a lot and its gotten chronic. I have had PT, cortisone shots, braces, plus I rested (no golf) for two months for it to heal. It was better, but then it just came back after a few months. I do daily at home PT for them but nothing works. I consciously keep a loose grip on the club.

A fellow golfer suggested PRP injections, said it worked for him. The injections are not cheap and insurance doesn't pay.

Has anyone had success with this for elbows?