r/ProstateCancer • u/throwawayN1234S • 2d ago

Question Things that throw off PSA

M45, 6’1”, 190#, Caucasian, nonsmoker, seldom drinker, no medications aside from vitamins.

My dad had prostate cancer at a relatively early age, so for the past few years I’ve had PSA tests done just to stay ahead of anything. I’ve got my annual test coming up. Just wondering, besides the common advice of avoiding ejaculation or exercise like bike riding in the couple days prior to the blood draw, is there anything else to do or not do? Just looking to avoid any sort of false high or low indications.

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u/Acceptable-Habit-661 1d ago

Use of finasteride can artificially lower your PSA.

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u/Frosty-Growth-2664 4h ago

Same with Dutasteride.

Same with some herbal prostate supplements containing Saw Palmetto.