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What are prostate-specific antigen (PSA) levels for prostate cancer?

ANSWER

The prostate gland makes prostate-specific antigen. It's normal for a man to have small amounts of PSA into the bloodstream. Larger amounts of PSA in the bloodstream usually signal that the prostate gland is enlarged, infected, or malignant. A blood test checks PSA levels. The higher the number, the more likely the man is to have prostate cancer.

SOURCES: 

Prostate Cancer Research Institute.

National Cancer Institute. 

American Cancer Society.

UpToDate.

Reviewed by Sabrina Felson on July 28, 2020

SOURCES: 

Prostate Cancer Research Institute.

National Cancer Institute. 

American Cancer Society.

UpToDate.

Reviewed by Sabrina Felson on July 28, 2020

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What is PSA velocity?

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