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29 kwi 2017 · Free PSA is a type of PSA test that measures the level of unbound PSA in your blood. It may be used instead of a biopsy to rule out prostate cancer, but you may still need a biopsy if your results are suspicious.
Free PSA ranges can vary, but in general, a higher ratio of free PSA to total PSA is healthier. When the ratio of free to total PSA is between 0 and 10 percent, the risk of having cancer may be as high as 56 percent. When this ratio is greater than 25 percent, this risk reduces to 8 percent.
14 kwi 2023 · Free PSA ranges can vary, but generally, a higher ratio of free PSA to total PSA indicates a lower risk of prostate cancer. On the other hand, a low ratio of free PSA to total PSA...
Points to remember. PSA levels between 4.0 and 10.0 ng/mL might suggest the possibility of prostate cancer (in about 25 percent of cases) or BPH. The PSA levels above 10.0 ng/mL should be urgently discussed with your doctor because these are associated with a 50 percent chance of having prostate cancer.
The total PSA range of 4.0 to 10.0 ng/mL has been described as a diagnostic "gray zone," in which the free PSA:total PSA ratio helps to determine the relative risk of prostate cancer (see table). Therefore, some urologists recommend using the free PSA:total ratio to help select which men should undergo biopsy.
18 mar 2024 · What constitutes a normal prostate-specific antigen (PSA) level? Why might someone’s PSA levels be elevated? And, is there such a thing as a “dangerously high” PSA level? Urologic surgeon Lisly Chéry, M.D., weighs in on these and three other frequently asked questions.
When the total PSA value is in the normal range, percent free PSA improves the sensitivity of the PSA test (improves cancer detection). When the total PSA value is 4.1 to 10.0 ng/mL, percent free PSA improves the specificity of the PSA test (eliminates negative prostate biopsies).
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