What Is Psa Testing For Prostate Cancer

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The PSA test is a simple blood test, taken from the arm, which measures the amount of PSA protein in the blood. It is common for PSA to be found in the blood in very small concentrations. Higher levels of PSA may indicate the presence of cancer, but can also be an indicator of other prostate conditions.. Prostate specific antigen PSA blood test. Prostate specific antigen PSA is a substance made by cells in the prostate gland both normal cells and cancer cells . PSA is mostly found in, but a small amount is also found in the blood..What is the PSA test? 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 a man s blood. For this test, a blood sample is sent to a laboratory forysis..