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Benign Prostatic Hyperplasia (BPH)

Prostate-specific antigens (PSAs) are proteins made by both cancerous and non-cancerous prostate cells. Cancerous cells usually produce more, so elevated PSA levels in a blood test can indicate prostate cancer.

High levels of PSA do not always mean cancer, and normal PSA levels do not guarantee cancer is not present. High levels of PSA may also result from an enlarged prostate (BPH) or prostatitis (prostate infection). However, combined with the digital rectal exam, a PSA screening remains the best way to detect prostate cancer. After prostate cancer is detected, PSA testing also can help determine the best treatments and prognosis.