ABSTRACT
PURPOSE: To evaluate the relationship between levels of total testosterone and total prostate-specific antigen (PSA) in healthy men with PSA or =50 years. RESULTS: In all patients, the mean values for serum PSA and total testosterone were 1.27+/-0.88 ng/mL and 404.04+/-158.86 ng/mL, respectively. No correlation was detected between serum PSA and testosterone levels in either subgroup (group I, r=0.072, p=0.363; group II, r=0.031, p=0.900) or in patients aged or =50 years and in patients aged <50 years were 417.01+/-163.35 and 344.16+/-120.21 ng/dL, respectively (p=0.02). CONCLUSIONS: No impact of testosterone was found on the PSA level in healthy men with PSA <4 ng/mL. Therefore, a high serum testosterone level may not mandate adjustment of PSA values. This serum sex hormone showed a significant increment after the age of 50 years. Further studies including a larger number of patients should be carried out to confirm these findings.