Reference Range

Total PSA Reference Range

0-59 Years: 0.000-4.000 ng/mL

60 Years-69 Years: 0.000-5.000 ng/mL

>69 Years: 0.000-6.000 ng/mL

For total PSA values in an intermediate range between 4.0 and 10.0,

a lower F/T ratio is associated with a higher chance of cancer.
The probability of cancer in men with a F/T PSA ratio of < 0.10 was 56%.
The probability of cancer in men with a F/T PSA ratio of > 0.25 was 8%.

Catalona et al., JAMA 1998; 279: 1542.