prostate-specific antigen (PSA)

Prostate-specific antigen (PSA) is a protein produced by cells in the prostate gland, which is found only in men. PSA levels can be measured through a blood test and are often used to help screen for prostate cancer or to monitor the condition in men already diagnosed. Elevated PSA levels may indicate prostate cancer, but they can also result from other conditions, such as benign enlargement of the prostate or infections. It's essential to discuss PSA test results with a healthcare provider to understand their significance and decide on any further steps.