Posted 6/14/2014 6:04 PM (GMT 0)
Tony is absolutely right, some prescription drugs can mess with your PSA test result.
He is right about antihistamines which can do this, but there are also some others which can be culprits.
When my doctor put me on a more or less permanent prescription of Omeprazole (Prilosec) last year following an esophageal ulcer diagnosis, one of the first things I did was to research the possible effect of this drug on future PSA tests.
It turned out that there was no effect by this drug, or at least none has been reported, and this seems to have been confirmed by the fact that I have still had undetectable PSAs on the two tests I have had since beginning this drug.
But a point I also want to make is that I really had to so some digging to find out that the Omeprazole would not be skewing my result. I finally found this information on a Q&A page on Dr. Catalona's site, where he himself said flatly that it would have no effect. But it seems that sometimes you may have to dig a little to find out if a med does or does not impact PSA. I found that references to the PSA test are not always automatically given when talking about a given drug on impact-of-drug type websites.
But to re-emphasize Tony's point, if you do get an unexpectedly high PSA result reported back to you following a test, and you know you haven't done any of the usual influences (bike-riding, sex, etc.), do ask yourself if you have been taking any kind of drug, even an OTC one, that just might have "messed with" that PSA result.