Free PSA: This is the portion of PSA that circulates free (unattached) in the blood, not bound to any proteins. In other words, imagine PSA as letters in your bloodstream.

PSA, a protein produced by prostate gland cells, circulates through the body in two ways: either bound to other proteins or on its own. PSA traveling alone is called free PSA. The free-PSA test …

May 7, 2025 · Free PSA is PSA that hasn’t bound to any proteins. Bound PSA is PSA that has bound to proteins. When your PSA is tested, it may be measured two ways. A free PSA test …

Feb 26, 2020 · PSA, a protein produced by prostate gland cells, circulates through the body in two ways: either bound to other proteins or on its own. PSA traveling alone is called free PSA. The …

Nov 22, 2022 · Free PSA is not used to monitor results after treatment only to evaluate risk before diagnosis. The free PSA test is particularly helpful in situations where a biopsy is negative but …

PSA exists in serum in multiple forms: complexed to alpha-1-anti-chymotrypsin (PSA-ACT complex), unbound (free PSA), and enveloped by alpha-2-macroglobulin (not detected by …

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Apr 14, 2023 · A free PSA test measures the level of prostate-specific antigens (PSA) that are not bound to other proteins in the blood. This helps diagnose prostate issues.

Oct 2, 2025 · PSA Free Means: Understanding Free PSA in Prostate Cancer Detection Free PSA (fPSA) refers to the unbound form of prostate-specific antigen in the bloodstream, which is …

Prostate-specific antigen (PSA) is a protein produced primarily by the prostate gland. While most PSA is released into semen, small amounts leak into the bloodstream where it can be …