Prostate-Specific Antigen (PSA) in Serum by Immunoassay (Screening Probe)

What Is PSA Testing Used For?

PSA testing is primarily used as a screening tool to detect potential prostate problems. It can help identify whether further evaluation, such as a biopsy, is needed. However, PSA alone is not definitive for diagnosing prostate cancer and should be interpreted alongside clinical findings and patient history.

How Is the Test Performed?

A blood sample is drawn from a vein in your arm. The sample is then analyzed in a lab using an immunoassay method to measure PSA levels. This process is quick and typically requires no special preparation beyond fasting if instructed.

What Might Influence PSA Levels?

Several factors can affect PSA levels, including age, prostate inflammation (prostatitis), recent ejaculation, prostate surgery, or medical conditions like benign prostatic hyperplasia (BPH). It’s important to discuss any recent changes or conditions with your healthcare provider before testing.

When Might You Need This Test?

Your doctor may recommend PSA testing if you’re at higher risk for prostate cancer (e.g., age 50+ with average risk, age 45+ with higher risk factors like family history), or if you have symptoms like frequent urination, pain during urination, or blood in urine.