Prostate Marker Test (PSA, Free PSA & Ratio)

The Prostate Marker Test measures prostate-specific antigen (PSA) in the blood in two forms — total PSA and free PSA — and calculates the ratio between them. PSA is a protein produced by the prostate gland; a small amount normally circulates in the blood, and the level tends to rise with prostate enlargement, inflammation and prostate cancer. Because a raised total PSA can have several benign causes, measuring it alone is not specific. Splitting it into…

The test requires only a standard venous blood sample and takes a few minutes to draw; there is no special preparation beyond avoiding activities that can transiently raise PSA before the test, which the clinic will advise on. At Onkologie Bona Dea the result is not read in isolation — it is incorporated into the oncologist's overall examination and individual risk assessment, alongside the clinical prostate examination, age and family history. It is most…

This targeted marker suits men who want a focused prostate-risk check, those with a family history of prostate cancer, and men following up a previous borderline reading. For those wanting the most refined stratification, the clinic also offers the Prostate Health Index (PHI), a more advanced calculation that adds the [-2]proPSA isoform. As with all the clinic's services this is a preventive screening tool interpreted by an oncologist rather than a…