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What is PSA and why is it important?


Prostate-specific antigen, or PSA, is a biomarker you have been checking since you were diagnosed with prostate cancer. PSA can be measured through a routine blood test.

A rise in your PSA number can tell you your cancer is progressing

How PSMA is different from PSA


PSA and prostate-specific membrane antigen (PSMA) are both important biomarkers for you to check, and they tell you different things. Unlike PSA, which is detected through a blood test, PSMA is detected with a PSMA PET scan.

PSMA can tell you if your cancer has progressed and where in your body it has spread

PET, positron emission tomography.

Biomarker: A characteristic of your cancer that can be measured and give your doctor more information about your cancer.

PSMA PET scan: An imaging test that allows your doctor to check for PSMA-positive (PSMA+) cancer in your body.