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prostate-specific antigen

protein
Also known as: PSA

Quick Summary

Prostate-specific antigen (PSA) is a protein produced by the epithelial cells of the prostate gland. It is also known by its abbreviation, PSA. The concentration of PSA in blood serum can be proportional to the clinical stage of prostate cancer, making it a marker used in diagnosis. Prostate cancer is a disease characterized by the uncontrolled growth of cells within the prostate gland. While PSA is a useful diagnostic tool, high PSA levels are not always indicative of prostate cancer and can also be elevated due to other conditions like infection or benign prostate hyperplasia.12

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