
PSA is determined from a sample of blood, and it can be used in different ways:
In men when it is not known whether they suffer from prostate cancer, as a screening or diagnostic test.
In men already diagnosed with prostate cancer, as a specific marker or monitoring procedure.
PSA (prostate-specific antigen), a protein that liquefies semen, is secreted by prostate and used as a tumour marker.
This substance is found only in the prostate and only in men, and it is a tumour marker in men starting at age 50, when a certain amount of this protein is present in the bloodstream.
PSA can be found in blood a free form, or bound to other blood substances.
When in the free form, it is known as free PSA.
▪ When bound to other substances, it is known as complexed PSA.
▪ The total PSA is the sum of both forms of PSA, which is regularly determined in blood tests.
When PSA determination is used as a screening or diagnostic test, if an abnormal result is observed then additional tests will be required. Increased levels of PSA may suggest the presence of prostate cancer.
Dr. Fernández Montero, José Manuel
Jefe de la Unidad de Urología
Tel.: +34 952 908 628
952908898 Oncology
951829978 Diagnosis by imaging
951829947 Gynecology
952908897 Fertility
951829947 Physiotherapy
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