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Normal prostate-specific antigen levels go up to 2.5 nanograms per milliliter for ages 40 to 49, 4.0 nanograms per milliliter for 50 to 59, 4.5 nanograms per milliliter for 60 to 69 and 6.5 nanograms per milliliter for 7... More »

There is no clear cutoff for the normal range of the prostate specific antigen in men, reports Harvard Health Publications. Most United States doctors consider 4.0 nanograms per milliliter as normal, but since the levels... More »

A normal PSA blood level is 4 nanograms per milliliter of blood, according to MedlinePlus. Men younger than 50 should have levels below 2 ng/mL. Older men usually have levels above 4 ng/ML. PSA refers to a protein made b... More »

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Normal levels of total PSA, or prostate-specific antigen, increase from less than 2.0 nanograms per milliliter under age 40 to less than 7.2 nanograms per milliliter above age 80, says Mayo Clinic. If the PSA level is hi... More »

Normal levels of prostate-specific antigen, or PSA, range from 1.0 to 4.0 nanograms per milliliter of blood, according to MedicineNet. The normal level may, however, be higher in older men and lower in young men because ... More »

Low levels of PSA, or prostate-specific antigen, are considered desirable, since they indicate a lower risk for prostate cancer; readings below 4 nanograms per milliliter are considered normal, according to Health Magazi... More »

PSA levels above 4.0 nanograms per milliliter are considered to be elevated, according to the National Cancer Institute. This figure does not indicate whether or not an individual has prostate cancer, as prostate cancer ... More »