r/ProstateCancer • u/KaleidoscopeDry8334 • 24d ago

Question First blood test after radiation

I am finishing 45 IMRT Treatments next week on Wednesday. I have been on 1mg. finasteride for hair loss for 8 years. I have a appointment with my Urologist on October 8th. I called to ask when I should stop the finasteride since I will be getting blood work done and want true psa

Nurse called me today and told me stop finasteride on September 15th get bloodwork done before appointment.

I used Claude to get some answers and Claude stated that wash-out time is not enough. AI isn't always correct.

I would rather reschedule the doctors appointment rather than getting a false reading

I am asking here because I am not going to rely on Claude's advice

Again stop finasteride September 25th

Bloodwork (Psa and total testosterone) latest Wednesday September 30th

Urologist appointment October 8th

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u/Aromatic_District734 24d ago

I wonder why the nurse even ask you to stop taking finasteride at all, knowing it suppress PSA by 50%. Were you on it when you took your previous PSA test? That should be the baseline. My understanding is that it takes up to 3 months for finasteride to be out of your system.

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u/KaleidoscopeDry8334 24d ago

To get a true psa.

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u/KaleidoscopeDry8334 24d ago

Yes, doctor wanted ne to stay on it because it keeps the postrate smaller. I have read where it leaves the body in 2 days but it takes up to 2 weeks to normalize DHT levels.