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Old 09-29-2007, 01:59 PM   #1
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how much will sex raise PSA levels

how much will sex raise PSA levels

 
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Old 09-29-2007, 05:23 PM   #2
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Re: how much will sex raise PSA levels

Quote:
Originally Posted by WN3OPF View Post
how much will sex raise PSA levels
My uro told me that having sex withing 2 days of having blood drawn for your PSA test could produce a false positive.

The other things you should do before you have a PSA test are...

Tell your doctor if you have had a:

Cystoscopy in the past several weeks.

Prostate needle biopsy in the past several weeks.

Prostatitis or an urinary tract infection that has not gone away.

Catheter inserted into your bladder to drain urine recently.


Good luck!

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Last edited by able5; 09-29-2007 at 08:47 PM.

 
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Old 09-30-2007, 05:18 AM   #3
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Re: how much will sex raise PSA levels

Studies indicate 0

 
Old 09-30-2007, 06:08 AM   #4
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Re: how much will sex raise PSA levels

Quote:
Originally Posted by aus;3233***
Studies indicate 0
References?
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Old 09-30-2007, 07:46 AM   #5
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Re: how much will sex raise PSA levels

These are the the references I found


1) In Walsh's Surviving Prostate Cancer book, 2nd Ed, he says on page 146 that "Sexual activity can elevate PSA as well:PSA levels can increase as much as 41 percent in less than an hour after ejaculation." Unfortunately, there is no reference. They mention that DREs can raise PSA. They do mention 2 studies that rule out bike riding as a cause of artificially elevated PSAs. No references on the bike studies or the DRE.

2) There was study was in Urology. 1997 Aug;50(2):239-43, that "When normal biologic variation was accounted for, 40% of men, at 24 hours after ejaculation, had total PSA levels above the baseline level. Similarly, 24 hours after ejaculation, the percent free PSA remained above baseline level in 10% and below baseline level in 35% of the men. " (Everybody had PSA below 4 at the start of the test.

The abstract is here
[url]http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&Term ToSearch=***5295&ordinalpos=1&itool=Entr ezSystem2.PEntrez.Pubmed.Pubmed_ResultsP anel.Pubmed_RVAbstractPlus[/url]


3) This is a note about one patient., Hell J Nucl Med. 2007 May-Aug;10(2):119. A 52 year old man had a PSA of 1.2. His PSA was 6 and 7 on 2 separate occasions after having sex within 24 hours.

Here's the link

[url]http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=ShowDetailView&Term ToSearch=17684590&ordinalpos=1&itool=Ent rezSystem2.PEntrez.Pubmed.Pubmed_Results Panel.Pubmed_RVAbstractPlus[/url]



So it looks like some males can have elevated PSAs from sex

 
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Old 09-30-2007, 03:54 PM   #6
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Re: how much will sex raise PSA levels

This may sound stupid but wouldn't it be wise to err on the side of caution and abstain if having sex "might" raise your PSA?

Or do those "horny urges" overrule common sense?

Sometimes I just don't get it!

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