I have also read it will elevate the psa number but I have not viewed any studies as to a specific amount. I would think there are many variables - time between sex and psa test, health condition of the testee, diet befor and after, initial psa level and so forth. 2.63 and 6.5 are still in the single digit ball park - it is not like it raised from 2.6 to 100 so I don't know if it would be siginificent - either way the doc's are looking at 2.6 as higher than the goal of zero.
The Following User Says Thank You to Saltyair For This Useful Post: teteach (02-23-2011)
The natural stimulation of the prostate gland during sexual activity increases the amount of PSA in the blood stream above the individual's "normal" level, but after sex the temporary incremental amount of PSA gradually diminishes over time until the individual's "normal" level is re-estabilshed. No two people's bodies are exactly the same, so (i) the incremental increase in PSA during sexual activity, and (ii) the duration of time needed to diminish the incremental amount after sex, will vary. The general rule of thumb appears to consistently be to abstain from sex at least 48 hours before PSA testing---this was what my doctor told me to do, and what I have read repeatedly.
Also, note (in reference to the posting immediately below) that the "goal" of a man with a prostate—even a non-cancerous prostate—will not be zero. A normally functioning prostate will produce a nominal level of PSA measured in the blood stream. Cancer cells in the prostate produce PSA at roughly 20X the rate of non-cancerous prostate cells.
The following user gives a hug of support to kcon: teteach (02-23-2011)