1 Men in the range of 60 to 69 years have normal PSA levels that are less than 4.5 ng/mL. 2 Men over the age of 70 years have normal PSA levels that are less than 6.5 ng/mL.
In the past, most doctors considered PSA levels of 4.0 ng/mL and lower as normal. Therefore, if a man had a PSA level above 4.0 ng/mL, doctors would often recommend a prostate biopsy to determine whether prostate cancer was present. A normal PSA level is considered to be 4.0 ng/ml (nanograms per milliliter of blood). 1  For men in their 50s or younger, a PSA level should usually be below 2.5. 2  Older men often have slightly higher PSA levels than younger men. ABSTRACT: An association between age and prostate-specific antigen (PSA) has been documented: As men age, their serum PSA value increases. Currently, a single demarcation between normal and elevated PSA values, 4.0 ng/mL, is used as an indication for biopsy among men of all ages. 1 Men over the age of 70 years have normal PSA levels that are less than 6.5 ng/mL. 2  It is also important to note that the normal ranges of PSA results may vary from one laboratory to another. 3  The abbreviation ng/mL stands for nanograms per milliliter. 1 Men in the range of 60 to 69 years have normal PSA levels that are less than 4.5 ng/mL. 2  Men over the age of 70 years have normal PSA levels that are less than 6.5 ng/mL. 3  It is also important to note that the normal ranges of PSA results may vary from one laboratory to another. Accepted age-adjusted PSA rates are below 2.4 ng/ml for men under the age of 50 and 6.5 ng/ml for patients in their 70s. Other limits have been defined for varying age ranges, but there is not universal agreement about the accuracy of the age-adjusted levels. 1 With PSA levels between 3 and 10, only 20% of men have prostate cancer on biopsy. 2  Higher levels of PSA make prostate cancer more likely (50% chance with a PSA greater than 10). 3  If your PSA is raised, you will probably have a further blood test to measure the free/total PSA ratio (FTR). Prostate-specific antigen, or PSA, is a protein produced by cells of the prostate gland. The PSA test measures the level of PSA in a man’s blood. For this test, a blood sample is sent to a laboratory for analysis. The results are usually reported as nanograms of PSA per milliliter (ng/mL) of blood. The blood level of PSA is often elevated in men with prostate cancer, and the PSA test was originally approved by the FDA in 1986 to monitor the progression of prostate cancer in men who had already been diagnosed with the disease.
http://www.cancer.gov/types/prostate/psa-fact-sheet https://www.nlm.nih.gov/medlineplus/ency/article/003346.htm http://www.cancernetwork.com/oncology-journal/age-specific-reference-ranges-psa-detection-prostate-cancer http://www.myhealthyfeeling.com/normal-psa-levels-by-age/ http://www.myhealthyfeeling.com/normal-psa-levels-by-age/ http://www.healthcentral.com/prostate/psa-225336-5.html http://www.baus.org.uk/patients/conditions/10/raised_psa http://www.cancer.gov/types/prostate/psa-fact-sheet
what is average psa level by age