PSA is the industry leader in sports and hobby card grading as well as autograph and memorabilia authentication. Submit your collectibles for grading today!

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Learn what a PSA test is, plus the limitations and potential harms of the test when used to screen for prostate cancer.

Apr 5, 2024 · Cells in your prostate make a protein called prostate-specific antigen (PSA). A PSA blood test measures the amount of PSA you have circulating in your blood.

Apr 30, 2025 · The PSA test is a blood test used primarily to screen for prostate cancer. The test measures the amount of prostate-specific antigen (PSA) in your blood. PSA is a protein …

A PSA test is a blood test that screens for prostate cancer. PSA is made by your prostate. High levels may mean cancer or other prostate conditions. Learn more.

Mar 21, 2024 · A PSA (prostate-specific antigen) test is a blood test that helps healthcare providers diagnose and manage prostate cancer. High PSA levels don’t mean you have …

Dec 6, 2025 · Certain medications can affect PSA (prostate-specific antigen) levels, which are used to assess your prostate health, including testosterone and statins.

4 days ago · Compare Pokemon card values with PSA, CGC & TAG grading. Learn how grading impacts prices, costs, and which service maximizes your card's worth in 2025.

PSA is the largest and most respected third-party authentication and grading company in the world for trading cards and memorabilia. Authentication is the process of verifying the …