Prostate-Specific Antigen (PSA) Blood Test Results Explained

Following is an example of results of a Prostate-specific antigen (PSA) blood test.  The reference interval indicates the “normal range” for each of the components and a flag (if present) indicates a specific result that has fallen outside of the normal range.

The Prostate Specific Antigen (PSA) blood test measures the level of the PSA protein in the blood.  A normal healthy male typically has PSA level less than 4 ng/mL.  Studies have shown that PSA levels from 4 to 10 result in a 25% chance of prostate cancer and a PSA score greater than 10 increases the risk of cancer to more than 65%.