Commonly used drugs can affect PSA measurement - Scope

The prostate-specific antigen test has become a first-resort workhorse for determining whether a male patient needs to be biopsied for prostate cancer.Simply put, the more PSA there is in your blood, the more stressed-out prostate cells you've got (though that can be a result of infection or age-related growth of prostate tissue - not just of cancer).

Two Non-Cancerous Causes for Higher PSA - Johns Hopkins Medicine

Platz and colleagues found that the men with more inflammation in their biopsied tissue had higher PSA levels, "and the greater the amount of inflammation, the higher the PSA level." Although the scientists do not know exactly how inflammation raises PSA, they think that the inflammation disrupts the PSA-producing cells in the prostate and also ...