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  • Free PSA and Prostate Cancer: What You Should Know - Healthline
    Free PSA is measured as the proportion of free PSA to total PSA According to older research still used as guidance right now, in men with a total PSA between 4ng mL and 10 ng mL:
  • PSA, % Free - Lab Results explained | HealthMatters. io
    What If My PSA Total Is Normal, but My % Free PSA Is Low? When PSA, TOTAL is within the normal range, but % Free PSA is low, it can present a complex situation Here’s an explanation of each result: Normal PSA, TOTAL: Typically, a PSA level below 4 0 ng mL is considered normal, although this threshold can vary based on age and other factors
  • What is the difference between PSA and free PSA?
    Men with a total PSA in the same range and a free PSA below 10% need to have a biopsy More likely than not, they have prostate cancer In some cases, men with a "normal" PSA actually have cancer, but that low PSA doesn't prompt a biopsy A low PSA and a low percentage of free PSA, however, probably would
  • Prostate-Specific Antigen (PSA), Total and Free, Serum - Mayo . . .
    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
  • Screening Tests for Prostate Cancer - American Cancer Society
    One form is attached (“complexed”) to blood proteins, while the other circulates free (unattached) The percent-free PSA (%fPSA), also known as the free total PSA ratio (f t PSA), is the ratio of how much PSA circulates free compared to the total PSA level The percent-free PSA is lower in men who have prostate cancer than in men who do not
  • What Causes Low Free PSA Levels? - WebMD
    There are no normal levels of total PSA or free PSA for men of any age Different doctors may use different cutoff points to decide if you need a biopsy or other further testing
  • Free PSA: Test, results, and prostate cancer - Medical News Today
    Free prostate-specific antigen (PSA) tests can help detect prostate cancer High PSA levels may indicate prostate cancer, although they can also happen for other reasons PSA is a substance that
  • Prostate-Specific Antigen Blood Test - UPMC Hillman Cancer Center
    The free-to-total PSA test compares the amount of free PSA to total PSA — both free and bound — in the blood Free PSA is associated with benign conditions; bound PSA is associated with malignancy A low percentage of free PSA (25 percent or less) means a greater likelihood of prostate cancer than higher percentages of free PSA





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