I fully agree with halbert.
*Your pre-op PSA was 2.4, and 8 weeks (or about
56 days) have passed
*The trauma from surgery causes a "surge" of PSA in the bloodstream...let's say it shot up to 10 ng/mL (an unusually large surge)
*The half-life of PSA in the blood is 2-4 days; let's assume worst case of 4 days (slow to diminish)
***4 days after surgery, PSA = half of it's surge peak, or 5 ng/ml
***after another 4-days of half-life, 8 days after surgery PSA = 2.5
***12 days after surgery, PSA = 1.25
***16 days after surgery, PSA = 0.625
***20 days after surgery, PSA = 0.31 (I'm going to simply round to 2 decimal points)
***24 days after surgery, PSA = 0.16
***28 days after surgery, PSA = 0.08
***32 days after surgery, PSA = 0.04
***36 days after surgery, PSA = 0.02
***40 days after surgery, PSA = 0.01
***and so on...
*there will still be a very small amount of residual PSA, even after a prostatectomy.
InTheShop's comment is wrong. If you didn't have pre-op PSA close to 100 (you didn't), then 3-months waiting time isn't necessary, and 8-weeks is not
too early (and in fact, is the most common/typical waiting period).
I'm concerned for you having 0.18 ng/mL PSA at 8-weeks post surgery. (and double check that you've got the decimal point in the right place)
Post Edited (JackH) : 6/5/2017 1:35:34 PM (GMT-6)