What is PSA used to diagnose?

Prostate specific antigen (PSA)

is an antigen synthesized by prostate epithelial cells and mainly exists in semen. Normal prostate specific antigen is at a low level. If the subject finds that the prostate specific antigen value is significantly increased through prostate examination, it may be cancer cells and inflammatory reaction stimulate prostate specific antigen secretion, thus releasing more prostate specific antigen into the blood, so it can assist in the diagnosis of the above diseases.