What is a normal PSA test range for a man?

There is no normal or abnormal level PSA range for men, according to the National Cancer Institute. In general, any level below 4.0 nanograms per milliliter is considered normal by most doctors. A PSA reading of 4.0 nanograms per milliliter or above may indicate prostate cancer and necessitate more testing.

There is not a normal PSA level due to lack of scientific studies that establish a normal range, according to the National Cancer Institute. In general, doctors check a man's PSA levels frequently in order to see if they are increasing or decreasing. An increasing number may be indicative of prostate cancer.