Table 3: Changes in Cu/Zn among different PSA levels of prostate cancer patients.

Subjects
Normal PSA <3 ng/ml PSA (5-10) ng/ml PSA (11-20) ng/ml PSA (>20) ng/ml
Mean age (years) 60.0±5.1 70.1±2.4 74.1±2.4 75.1±4.4
Cu/Zn Ratio 0.67±0.05 0.83±0.06 1.21±0.12 1.34±0.83