Print this article
Share this page:
Also known as: total PSA; free PSA; complex PSA
Formal name: Prostate-Specific Antigen

At a Glance

Why Get Tested?

To help detect and to monitor prostate cancer

When to Get Tested?

If you have symptoms of prostate disease, such as difficulty in passing urine, straining or taking long time while urinating, hesitancy, weak flow, terminal dribbling or passing urine more frequently than usual especially during the night.

Sample Required?

A blood sample taken from a vein in the arm at any time of the day

Test Preparation Needed?

Avoid ejaculation for 48 hours before sample collection as this has been associated with elevated prostate specific antigen (PSA) levels; the sample should also be collected prior to your healthcare professional performing a digital rectal exam (DRE) and prior to or 6 weeks after a prostate biopsy. PSA may remain high for many months following a urinary tract infection, and for 48 hours following vigorous exercise, especially riding a bicycle).