Medical Oncologist
CION Cancer Clinics
Your PSA after prostatectomy: should it be zero? | CION Cancer Clinics
PSA after a prostatectomy should fall to undetectable, which is as close to zero as a blood test can measure. The report will say "less than" a small cut-off rather than "0", and that is the result your surgeon is hoping for. This page explains when the first test is done, what the different result patterns usually mean, how long the checks continue, and what the number cannot tell you. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
MM
Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
17+specialists on panel
15,000+patients treated
35+centres across Telangana & AP
4.8★ / 800+Google rating
On this page
- Should the PSA be zero after a prostatectomy?
- When is the PSA checked, and for how long?
- What the different first results usually mean
- The words on the PSA report, in plain language
- Four things families believe about PSA after surgery, and what is true
- What this page cannot tell you
- Common questions about PSA after prostatectomy
The short answer
Should the PSA be zero after a prostatectomy?
It should fall to undetectable, which is as close to zero as a blood test can measure. The prostate is the organ that makes PSA, so once the whole gland is out there should be almost none left in the blood. Your report will not say "0". It will say "less than" a small cut-off, and that is the result your surgeon is hoping for.
Why it is not tested straight after surgery
PSA that was already in the blood before the operation takes a few weeks to clear. A test done too early can show a number that is simply the old PSA still washing out, and that number frightens people for no reason. So the first test is deliberately delayed.
What the first result is really checking
Whether any prostate tissue, healthy or cancerous, has been left behind anywhere in the body. An undetectable first result means the operation removed all the tissue the blood test can sense. It is the result most men get.
What a detectable first result means
Not always cancer. A tiny amount of healthy prostate tissue can be left at the join and go on making a little PSA. The team looks at the exact number, repeats the test, and reads it alongside your pathology report before deciding what, if anything, to do.
The schedule
When is the PSA checked, and for how long?
-
No earlier than six weeks after surgery
The first test. Guidelines ask for it to wait at least this long so the old PSA has cleared. Many surgeons order it around the two-to-three month mark, at the first proper follow-up visit.
-
At least every six months for the first two years
This is the period when most recurrences would show, so the checks are closest together. Your surgeon may test more often if the pathology report showed positive margins or spread outside the gland.
-
At least once a year after that
If the result has stayed undetectable, the gap widens. Testing continues for many years, because a late rise is possible and is still treatable if caught.
-
Any time a result changes
A single detectable result does not restart the clock on its own. It is repeated, usually within a few weeks, to see whether it is a blip or a trend. Trends matter; single numbers do not.
Not sure whether this applies to you?
Ask an oncologistReading the result
What the different first results usually mean
Four patterns, from the most common to the least. Your surgeon reads yours alongside the pathology report, never alone.
Undetectable
The result most men get. The operation removed all the tissue the test can sense. Follow-up continues on the normal schedule, and each undetectable result adds to the reassurance.
Detectable but low and steady
A small amount of PSA that does not climb on repeat testing. Often from a fragment of healthy prostate tissue left at the join. Usually watched with closer testing rather than treated.
Detectable and rising
A number that goes up on two or more tests. This is what the team is watching for, because it usually means prostate cancer cells are somewhere in the body. It is not an emergency, and it is often treatable. Our page on rising PSA explains the next steps.
Never undetectable
The PSA came down after surgery but never reached the undetectable line. Called persistent PSA. It prompts scans and a closer look at the pathology report, and sometimes earlier treatment.
More likely when the report showed
- Cancer at the cut edge (a positive margin)
- Cancer in the lymph nodes
On your report
The words on the PSA report, in plain language
- ng/mL
- Nanograms per millilitre, the unit PSA is measured in. After surgery the numbers that matter are all fractions well below one.
- Undetectable, or "less than"
- Below the lowest level the laboratory's test can measure. The exact cut-off is printed on your report and differs between labs.
- Ultrasensitive PSA
- A test that measures to a much smaller fraction. It can pick up a rise earlier, but also reports tiny wobbles that mean nothing. Your team will tell you which test they use and why.
- Biochemical recurrence
- A rise in PSA after surgery to 0.2 ng/mL or above, confirmed on a second test, without anything visible on a scan. "Biochemical" means the blood test shows it before anything else does.
- Persistent PSA
- A PSA that never became undetectable after the operation, rather than one that fell and later rose.
- PSA doubling time
- How many months it takes a rising PSA to double. A slow doubling time is more reassuring than a fast one, and it shapes what is offered next.
Leave a number, we will call you
One field. No form to fill in, and no charge for the call.
Commonly believed
Four things families believe about PSA after surgery, and what is true
"The report does not say zero, so something was left behind."
No blood test can measure zero. Every laboratory has a floor below which it simply reports "less than". A result at that floor is the undetectable result your surgeon wanted. Look for the "less than" sign, not for a zero.
"One PSA test is enough to know."
PSA is read as a trend over years, never as one number. A single result, high or low, is the first point on a line. The second and third points are what tell the team whether anything is changing.
"If the PSA rises, the cancer is back everywhere."
A rising PSA means some prostate cancer cells are somewhere, often a very small number, and often in one place near where the prostate was. Scans and the pathology report help locate it, and treatment aimed at that area is often possible.
"We can get the test done anywhere, any time, and compare."
Different laboratories use different tests with different cut-offs, and a change of lab can look like a change in PSA. Use the same laboratory each time where you can, and bring every report to the clinic so they are read side by side.
Did you know
The first PSA after surgery is the result families fear most and understand least. Ask your surgeon before the operation what "less than" will look like on the page, so that when the report arrives you recognise good news instead of searching for a zero.
Being straight with you
What this page cannot tell you
It cannot tell you what your own first result will be, and it cannot tell you what a detectable result means for you. That reading depends on the exact number, the trend, and what the pathology report showed about margins, grade and lymph nodes.
What the PSA does not measure
It does not measure how you feel, how well you are recovering, or whether the operation was done well. Men with an undetectable PSA can still be struggling with leaking or erections, and men with a detectable PSA can feel completely well. The two are separate conversations with your team.
What to ask at the first follow-up
Which laboratory to use and whether it is the same one each time. What cut-off that lab uses for undetectable. When the next test is due, and who will call you with the result. What number, or what kind of change, would make the team want to see you sooner. Keep a copy of every result together.
If a result arrives before your appointment and worries you, call the helpline rather than searching the number online. Someone will read it with you.Questions we are asked
Common questions about PSA after prostatectomy
What number counts as undetectable?
Whatever the lowest level your laboratory's test can measure, which is printed on the report as "less than" a small figure. Labs differ, and an ultrasensitive test has a much lower floor than a standard one. Ask your surgeon which test they use, and compare results only within the same lab.
Why did my surgeon wait so long for the first test?
Because PSA already in the blood before surgery takes a few weeks to clear. Guidelines ask for the first test no earlier than six weeks after the operation, and many surgeons wait a little longer.
My first result is detectable. Is the cancer back?
Not necessarily. A small, steady amount can come from healthy prostate tissue left at the join. The team will repeat the test and look at the trend and your pathology report before saying anything. A confirmed rise to 0.2 ng/mL or above is the point at which they call it a recurrence.
Can I have the blood test done in my district?
Yes, and many men do. Try to use the same laboratory each time, because different labs report differently. Send every report to the clinic ahead of the appointment.
How long do I keep having PSA tests?
For many years. The checks are closest together in the first two years, at least every six months, and then at least once a year. A late rise is possible and is still treatable if found, which is why the testing does not simply stop after a few clear results.
Does an undetectable PSA mean I am cancer-free?
It means no prostate tissue is producing enough PSA for the test to sense, which is the result everyone hopes for. It cannot promise that no cell remains anywhere, and that is why testing continues. Each further undetectable result over the years makes the picture steadily more reassuring.
Do I need scans as well as the blood test?
Not while the PSA stays undetectable. Scans are ordered when the PSA rises, to look for where the cells are.
Is the follow-up PSA test covered by Aarogyasri or insurance?
Follow-up blood tests are often outside the surgical package and paid for directly, though a PSA test is inexpensive at most laboratories. Some insurers cover follow-up visits within a set period after surgery. Call the helpline with your card details and we will check what your cover includes.
Meet the Specialists
17+ senior cancer specialists. One panel for your case.
Trained at AIIMS, Tata Memorial, and leading international centres. Combined 150+ years of experience. Every complex case is reviewed by 3+ of them — together.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Surgical Oncologist
Surgical Oncologist
Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
Surgical Oncologist
Radiation Oncologist
Radiation Oncologist
Radiation Oncologist
Hematologist
Surgical Oncologist
Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
Surgical Oncologist
Want a specific doctor for your case? Mention them when booking.
Book Free ConsultationBook an appointment with our specialist
Share your name and number — we'll call you back within 30 minutes to schedule your consultation.
Sources
- NICE — Prostate cancer: diagnosis and management (NG131)
- American Cancer Society — Treating Prostate Cancer
- National Cancer Institute — Prostate-Specific Antigen (PSA) Test
- NHS — PSA test
- Cancer Research UK — Prostate cancer
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Undetectable PSA: What It MeansThe result most men get, and what it does and does not promiseRising PSA After ProstatectomyWhat happens next if the number climbsBiochemical Recurrence ExplainedThe term on the report, and the threshold behind itFollow-Up Schedule After ProstatectomyEvery visit and test in the years after surgeryPositive Margins on the Prostatectomy ReportWhy the pathology report changes how the PSA is read
Talk to us
Have a PSA report you do not understand?
Send it to us or call the helpline. An oncologist will read it with you, alongside your pathology report, and tell you what the next step actually is. One helpline serves every CION centre.