HSS researchers are exploring using PRP and also other orthobiologics (regenerative medicine for orthopedic disorders), but the outcome in their usefulness for dealing with rotator cuff tendinopathy are mixed. Extra investigation is needed. The “protocol” for a labrum tear would follow the exact same principles for approaching other shoulder problems. https://www.theorthopaedicandpainpractice.com/what-are-some-shoulder-pain-treatments/