Prostate-Specific Antigen (PSA) in Serum or Plasma

Why PSA Testing Matters

PSA is often used as part of a screening process for prostate cancer, especially in men at higher risk. It can also help monitor treatment progress or detect changes in prostate health over time. However, PSA alone isn’t enough to diagnose cancer—it can also rise in other conditions like benign prostatic hyperplasia (BPH) or urinary tract infections.

What to Expect During Testing

A blood sample is drawn from a vein, usually in your arm. The sample is sent to a lab for analysis. Results are typically available within a few days. If your PSA level is elevated, your doctor may recommend further testing or follow-up.

Possible Causes of Elevated PSA

High PSA levels can be caused by prostate cancer, but they may also appear in conditions like an enlarged prostate, inflammation, infection, or recent ejaculation. Age, obesity, or certain medications can also affect PSA levels.

What Your Results Mean

Your PSA result is usually discussed alongside other factors, such as your age, symptoms, and family history. A doctor will interpret results in the context of your overall health. Very low PSA levels might raise concerns about prostate issues, while very high levels may warrant further investigation.