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How does a prostate-specific antigen test work?

The PSA test looks for high levels of prostate-specific antigens in the blood stream, as this could indicate prostate cancer. PSA occurs naturally and is normally confined to the prostate. Although some level of these antigens in the blood stream are normal, a diseased produces far more than usual, which escape out into the bloodstream. High PSA levels can also occur due to other conditions like inflammation of the prostate, so a result of high levels only means further tests are in order.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.