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Prostate Specific Antigen (PSA) is produced exclusively by cells of the prostate gland. Used in conjunction with the digital rectal examination, PSA is a useful screening test for benign prostate enlargement, prostatitis and prostate cancer development.
The CA 125 level can help doctors understand how to manage patients with ovarian cancer. However, the CA 125 blood test is not advised for women who are at average risk for ovarian cancer. Women with ovarian cancer usually have high levels of CA 125. However, a high CA 125 level does not always mean you have ovarian cancer. Some women who have ovarian cancer may never show a high CA 125 level.
