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But men who are at a higher risk for the cancer should get screened beginning at age 40. ... blood test to detect levels of prostate-specific antigen (PSA). ... in men who have normal PSA levels
Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), P-30 antigen, is a glycoprotein enzyme encoded in humans by the KLK3 gene. PSA is a member of the kallikrein -related peptidase family and is secreted by the epithelial cells of the prostate gland in men and the paraurethral glands in women.
The American Urological Association recommends that you get a baseline PSA test between ages 45 and 50, but screening can start at age 40 for those at a higher risk for prostate cancer, such as ...
Prostate-specific antigen. Prostate-specific antigen (PSA) is secreted by the epithelial cells of the prostate gland and can be detected in a sample of blood. [14] PSA is present in small quantities in the serum of men with healthy prostates, but is often elevated in the presence of prostate cancer or other prostate disorders. [15]
A reference range is usually defined as the set of values 95 percent of the normal population ... References range may vary with age, sex ... (PSA) 40–49 years ...
PSA levels between 4 and 10 suggest you could have about a 25 percent chance of prostate cancer, and levels over 10 signal that your chance of having the cancer is more than 50 percent.