What Is the PSA Range for Prostate Cancer?

The normal level of prostate-specific antigen, or PSA, is 4.0 nanograms per milliliter or lower. When a PSA test gives a higher result than this number, doctors can recommend a biopsy to confirm if prostate cancer is present. This is due to the fact that many men may have an elevated level of PSA and not have cancer, while some men with a level in the normal range may have cancer, states the National Cancer Institute.