PSA (Prostate-Specific Antigen)
A blood test marker for prostate disease; elevated levels can indicate cancer or benign causes.
PSA is used for prostate cancer screening and post-treatment monitoring. Levels rise with prostate cancer, BPH, prostatitis, and after digital rectal exam.
What this means for you: PSA trends matter more than single values. After prostatectomy, PSA should drop to undetectable; rising PSA may indicate recurrence.
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