print email comment close The Prostate-Specific Antigen (PSA) Test URL: http://www.cancer.gov/cancertopics/factsheet/detection/PSA Description: Fact sheet about this test measuring levels in the blood of prostate-specific antigen (PSA), "a protein produced by cells of the prostate gland." Includes details about why and how the test is performed, some of the limitations of the PSA test, why "using the PSA test to screen men for prostate cancer is controversial," research to improve the test, and other prostate cancer detection methods under study. Also in Spanish. From the National Cancer Institute. Publisher: National Cancer Institute LII Database Information: Record 28145 created by Jennifer English on 03/19/2009 Last modification on 03/23/2009 Published: 03/26/2009   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/28145