Posted 8/4/2021 5:17 AM (GMT -6)
Hi VDSD and Welcome to the Forum! Although I can't give you any guarantees you're PSA isn't on the rise, here are some reasons not to jump to that conclusion:
1. There is uncertainty in the right-most digit of any lab test because of (1) test/testing fluctuations (e.g. sample prep; equipment calibration) , (2) one's fluctuations even when PSA is essentially steady; and (3) rounding: for example an actual PSA of 0.025 would be rounded to 0.03 for a test that reports two decimal places. So even if correct, your last two reading could represent a change as small as 0.019 to 0.025. And that IMO could represent the start of a slow rise or just normal fluctuation around a stable mean (whatever the causes of these fluctuations).
2. Outliers do occur (for example, I recently jumped from <0.014 to 0.034, but then right back to 0.020 followed by 0.018. (I went from 6-month to 3-month testing after the jump to see what was going on -- now I'm back to 6.) An unexpectedly high PSA should be re-checked.
3. Apart from unexplained outliers, labs do make outright errors.
4. Even when there is a rise, it may take few data points to establish the rate of climb (doubling time). The trend has to be smooth out any natural or artificial fluctuations, especially if the rate of rise is small.
My suggestion is to wait for your next test (or get it sooner than scheduled, if that will help you psychologically). Relax! What testing schedule are you on? Has your doc commented on the recent value?
You are invited to create a signature file with your salient history (see other folks signaturesfor example of what to include). A sig. will help Forum Brothers replying to your questions and save you from repeating yourself.
All the best,