A blood test that checks a protein made by the prostate can find cancer before you feel sick, even if it’s not perfect.

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Evidence from Studies

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Prostate-Specific Antigen as an Ultrasensitive Biomarker for Patients with Early Recurrent Prostate Cancer: How Low Shall We Go? A Systematic Review

Systematic Review

Human

2024 Apr 8

This study looks at PSA levels in men who already had prostate cancer and had surgery, to see if tiny changes in PSA can predict if the cancer is coming back. It doesn’t test whether PSA can find cancer in healthy men who have no symptoms yet.

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Similar Assertions

The PSA blood test isn't very good at telling the difference between harmless prostate changes and real cancer, so many men get scared and undergo painful tests they don't need.

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