Psa Test Results — Meaning

For more detailed information on screening guidelines, visit the National Cancer Institute's PSA Fact Sheet .

Interestingly, some studies suggest that PSA levels can vary throughout the day and may be slightly lower in the afternoon. Consistency in when you get tested can help your doctor track "PSA velocity"—how fast your levels change over time—which is often more important than a single snapshot. Psa Test Results Meaning

Still confined to the prostate; PSA is often 10–20 ng/mL . For more detailed information on screening guidelines, visit