prostate-specific antigen
noun
pros·tate-spe·cif·ic antigen
: a protease secreted by epithelial cells of the prostate gland that is used in the diagnosis of prostate cancer since its concentration in blood serum tends to be proportional to the clinical stage of the disease
—abbreviation PSA
Examples of prostate-specific antigen in a Sentence
Recent Examples on the Web
Healthcare providers often detect prostate cancer using routine screening tools, including a digital rectal exam and a prostate-specific antigen (PSA) blood test.
—
Carrie Madormo, Health, 6 July 2025
It’s almost always detected via a routine prostate-specific antigen (PSA) test, a screening blood test that most men undergo every couple of years or so starting around age 50 for those with average risk.
—Angela Haupt, Time, 27 June 2025
He was later diagnosed with prostate cancer, despite feeling healthy and active, and received a follow-up prostate-specific antigen (PSA) blood test in April, which confirmed the diagnosis.
—Dominique Fluker, Essence, 6 June 2025
Many prostate cancers in the U.S. are detected with a blood test that measures prostate-specific antigen (PSA).
—Sarah Fortinsky, The Hill, 21 May 2025
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Carrie Madormo, Health, 6 July 2025
It’s almost always detected via a routine prostate-specific antigen (PSA) test, a screening blood test that most men undergo every couple of years or so starting around age 50 for those with average risk.
—Angela Haupt, Time, 27 June 2025
He was later diagnosed with prostate cancer, despite feeling healthy and active, and received a follow-up prostate-specific antigen (PSA) blood test in April, which confirmed the diagnosis.
—Dominique Fluker, Essence, 6 June 2025
Many prostate cancers in the U.S. are detected with a blood test that measures prostate-specific antigen (PSA).
—Sarah Fortinsky, The Hill, 21 May 2025
See All Example Sentences for prostate-specific antigen
Cite this Entry
“Prostate-specific antigen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prostate-specific%20antigen. Accessed 9 Sep. 2025.
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