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Tag: percent-free PSA

September 2, 2026

Free PSA vs. Total PSA: Differences, Percent-Free PSA, and Next Steps

Learn what free, bound, total, and percent-free PSA measure—and why the result adds context but never makes the diagnosis alone.

Direct answer: Total PSA is the amount of prostate-specific antigen measured in blood in both protein-bound and unbound forms. Free PSA is the unbound fraction. Percent-free PSA is calculated from the free and total measurements […]

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September 1, 2026

PSA Levels Explained: Results, Causes and Next Steps

Understand what a PSA result can mean, what can change it, and how repeat testing and clinical follow-up may clarify an unexpected result.

Direct answer: Prostate-specific antigen (PSA) is a protein made by prostate cells. A PSA blood test can support an informed prostate-cancer screening decision, help evaluate certain prostate or urinary concerns, and monitor people after prostate-cancer […]

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