Men with this same level of total PSA have a cancer probability of 0.25, while adding the criterion of a percent free PSA level of 17 percent or less increases the cancer probability to 0.45. The
Measuring prostate specific antigen (PSA) levels in the blood to screen for prostate cancer is recommended, as well as performing the DRE. PSA testing alone cannot determine if symptoms are due to BPH or prostate cancer, because both conditions can elevate PSA levels. The fall in PSA levels, and any adverse effects on sexual function
Prostate-specific antigen (PSA) is a protein that forms in the prostate gland. A PSA test calculates PSA levels in the blood. While it cannot stage cancer by itself, it is a useful screening tool.
A normal PSA level ranges from 0-4 nanograms/mL. However, the upper level of normal may vary according to age and race. Prostate-specific antigen (PSA) is a protein produced by the prostate gland. It is secreted by prostate epithelial cells into prostatic fluid, where its function is to liquefy semen and thus allow spermatozoa to move
If levels were above 4.0, doctors would consider that to be a red flag for cancer and order a biopsy . In recent years, however, doctors have come to understand that there is no real "normal" PSA value. In fact, men with a low PSA can have prostate cancer, while those with PSAs well above 4.0 could be entirely cancer-free.
If PSA ≥ 3 ng / mL: consider prostate biopsy; PSA ≥ 1 but < 3 ng / mL: return for PSA testing every 2 - 4 years; PSA < 1 ng / mL: return for PSA testing at 6-10 years. PSA testing should end at age 60 for men with PSA ≤ 1 ng/ mL; at 70, unless a man is very healthy and has a higher than average PSA; at 75 for all men.
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psa and free psa levels
