What should you avoid before a PSA blood test?

What to Avoid Before Your PSA Blood Test

Getting a PSA (prostate-specific antigen) blood test? A few simple lifestyle adjustments in the days leading up to it can help ensure more accurate results. While PSA tests are commonly used to screen for prostate issues—including enlargement, inflammation, or cancer—several factors can temporarily raise your PSA levels, potentially leading to unnecessary concern.

Sexual activity that leads to ejaculation is one such factor. Whether through sex, masturbation, or other means, ejaculation can cause a short-term increase in PSA. To avoid this, experts recommend abstaining for at least 48 hours before your test.

Even more important: avoid anything that directly stimulates the prostate. That includes anal sex or prostate play, both of which can irritate the gland and significantly bump PSA levels. Because the effect can last longer, it's best to skip these activities for at least a week prior to testing.

It’s not just sexual behavior—other things like recent urinary tract infections, vigorous exercise (especially cycling), or even a digital rectal exam shortly before the blood draw can also influence results. But since sexual activity is a common and often overlooked factor, many doctors emphasize it when preparing patients.

These recommendations aren’t about long-term restrictions—they’re about timing. A few days of caution can prevent a false alarm and spare you from follow-up tests or anxiety. If you're unsure, always talk to your doctor about what to avoid based on your personal health history.

Bottom line: for a clearer picture of your prostate health, it’s worth being mindful of what you do in the days before your PSA test. A little preparation can go a long way toward accurate, reliable results.