prostate-specific antigen

American  

[prahst-ayt-spi-sif-ik an-ti-juhn] / ˈprɑst eɪt spɪˈsɪf ɪk ˈæn tɪ dʒən /

noun

1. Physiology. a protein produced by the prostate that, if present in high levels, may indicate the presence of cancer.

---

prostate-specific antigen Scientific  

1. A protease secreted by the epithelial cells of the prostate gland. Blood levels are elevated in patients with prostate enlargement and prostate cancer and are used as a screening test for prostate cancer.

---

Example Sentences

See Examples For:

prostate-specific antigen

Biden’s doctors didn’t provide prostate-specific antigen screening, which produces a PSA score that is used to help detect prostate cancer.

From The Wall Street Journal ● May 31, 2026

Subsequent research at Ohio State found that increased consumption of the juice was linked to lower prostate-specific antigen levels in some men with prostate cancer.

From Science Daily ● May 30, 2026

In a Phase 1 trial, 14 of 17 patients showed at least a 50% reduction in prostate-specific antigen, or PSA, a protein that indicates the presence of prostate cancer at elevated levels.

From Barron's ● Feb. 24, 2026

The EpiSwitch PSE test is said to be able to detect prostate cancer with 94% accuracy, which the charity called a "significant improvement" on the most commonly used prostate-specific antigen test.

From BBC ● Feb. 25, 2025

My prostate-specific antigen was good so there was no worry about prostate cancer.

From Seattle Times ● Jun. 29, 2022