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Prostate-specific antigen, or PSA, is a protein produced by normal, as well as malignant, cells of the prostate gland. The PSA test measures the level of PSA in the blood. For this test, a blood sample is sent to a laboratory for analysis. The results are usually reported as nanograms of PSA per milliliter (ng/mL) of blood.
- Understanding Prostate Changes
Can prostate cancer be detected early? PSA testing is...
- Understanding Prostate Changes
18 Μαρ 2024 · What constitutes a normal prostate-specific antigen (PSA) level? Why might someone’s PSA levels be elevated? And, is there such a thing as a “dangerously high” PSA level? Urologic surgeon Lisly Chéry, M.D., weighs in on these and three other frequently asked questions.
10 Σεπ 2024 · A single baseline PSA level is suggested for all men aged 40 to 45. Annual testing is reasonable in higher-risk men starting at 45. A change of >0.75 ng/mL per year or >25% is considered suspicious. At least 2 separate elevated PSA tests are required to confirm the increase.
13 Αυγ 2024 · Experts consider PSA levels below 4 nanograms per milliliter (ng/mL) to be typical for most people. Anything higher may indicate that you have cancerous cells in your prostate gland. But...
23 Ιαν 2024 · In men with a normal prostate (ie, no cancer and no major inflammation/infection), the majority of free PSA in the serum reflects the mature protein that has been inactivated by internal proteolytic cleavage. By contrast, this cleaved fraction is relatively decreased in prostate cancer.
1 Ιουν 2023 · Normal, hyperplastic, and neoplastic epithelial cells all make PSA, but the amount of PSA produced by cancer cells is 10 times higher per gram of tissue than the amount produced by...
The PSA test is a blood test that measures the amount of prostate specific antigen (PSA) in your blood. PSA is a protein produced by normal cells in the prostate and also by prostate cancer cells. It’s normal to have a small amount of PSA in your blood, and the amount rises slightly as you get older and your prostate gets bigger.
