Nadir prostate specific antigen (PSA) levels and time to nadir PSA (TnPSA) following radiotherapy have been proposed as predictors of outcome in prostate cancer. Ray et al. attempted to determine ...

Evaluated criteria for identifying abnormally elevated PSA levels were total PSA level, age-specific PSA level, free-to-total PSA ratio, and PSA velocity: 361 men (37%) would have had positive ...

Singer et al. found that regular consumption of either of these agents lowers serum PSA levels, which indicate prostate injury and are believed to predict the risk of developing prostate cancer.