The targeted prostate biopsy
When a biopsy is genuinely needed, what the day involves, and the risks explained the way we consent you for them.
Written and reviewed by Mr Ashwin Sridhar, Consultant Urological Surgeon
- Sampling time
- 20 to 30 min
- Admission to home
- 2 to 4 hrs
- Home the same day
- Day case
- Serious infection risk
- 1 in 100
When a biopsy is needed
Only after a scan has shown something worth sampling. These are the findings that lead to one.
A biopsy is never done on day one. The MRI comes first. If the scan is clear (PI-RADS 1 or 2) and your PSA density is low, you can usually avoid a biopsy altogether.
Even with advanced imaging, a biopsy remains an essential step when specific clinical signals indicate that tissue needs examining under a microscope.
- A distinct, suspicious focal area graded PI-RADS 4 or 5 on the scan.
- An intermediate PI-RADS 3 finding where your PSA density is high.
- A PSA that has risen rapidly and persistently over time.
- A prostate that feels abnormal on examination.
- A strong genetic family history.
Your consultant reviews the images on screen with you, and the biopsy is scheduled as a planned separate step. We arrange it and explain the cost in full before anything is booked.
Transperineal or transrectal
Why we go through the skin rather than the bowel, and what that changes.
When a biopsy is required, the modern standard of care is the transperineal biopsy, which has largely replaced the older transrectal approach in high-standard urological practice.
In the older transrectal method, ultrasound probes and biopsy needles were passed repeatedly through the wall of the rectum directly into the prostate. Because the bowel naturally contains high levels of bacteria, passing needles through that wall carries a significant risk of introducing bacteria straight into the prostate and bloodstream, leading to painful urinary infections and occasional severe sepsis requiring emergency admission.
A transperineal biopsy bypasses the bowel completely. The skin of the perineum, the area between the scrotum and the anus, is thoroughly cleaned with surgical antiseptic, and the fine biopsy needles are passed through the skin rather than the rectal wall. That single anatomical change takes the infection risk down from the two to five percent seen with the transrectal route to around one in a hundred.
Going through the perineum also provides far better access to the whole prostate, particularly the anterior zone at the front of the gland, which is difficult to reach and sample safely through the rectum.
The biopsy day, start to finish
A day-case procedure. You come in, it is done, and you go home the same day.
A transperineal prostate biopsy takes tiny, thread-like tissue samples from the prostate so a pathologist can examine them under a microscope.
Getting ready
You are positioned comfortably on your back with your legs resting in cushioned supports. We clean the perineum, the skin between the base of your scrotum and the back passage, thoroughly with antiseptic solution.
Lining up the target
An ultrasound probe is placed gently into the back passage using lubricating jelly to give a clear, live image of the prostate. We then link your MRI scan directly to the ultrasound screen, so the images act as an exact digital map of where to sample.
The anaesthetic
Under local anaesthetic we numb the skin and the deeper nerves around the prostate with an injection that stings for a few seconds before going completely numb. Under a light general anaesthetic you are asleep throughout and wake with the procedure finished.
Taking the samples
A spring-loaded needle passes through the clean skin of the perineum into the target area, taking targeted cores alongside standard samples from the rest of the gland. You will hear the mechanical clicking of the instrument, but should feel pressure rather than sharp pain. This takes roughly twenty to thirty minutes.
Going home
You can eat and drink as soon as you feel ready, and you will be asked to pass urine comfortably before discharge. The whole visit, from admission to heading home, is usually two to four hours.
The first forty-eight hours
Take things easy, avoiding heavy lifting, strenuous exercise and cycling. Most men feel a mild, bruised ache in the perineum for a couple of days, easily managed with paracetamol or ibuprofen.
Recovery, risks and results
The expected after-effects and the real risks, set out the way we consent you for them so there are no surprises.
- Bleeding
- Almost every man notices pink or blood-tinged urine for several days up to a week, which clears as you drink plenty of water. You will also see blood in your semen, which can appear red, dark brown or rust-coloured. It is completely harmless to you and your partner, but it can take four to six weeks, and occasionally a few months, to clear entirely. Mild bruising and skin tenderness across the perineum are also common.
- Temporary urinary retention
- This occurs in roughly two to five percent of men. Swelling around the prostate can make it difficult to empty your bladder in the first twenty-four to forty-eight hours. If it happens, a temporary catheter is placed for a few days to rest the bladder until the swelling settles.
- Temporary erectile difficulty
- This occurs in fewer than five percent of men, usually related to temporary nerve irritation or procedural anxiety, and typically recovers fully over the following weeks.
- Infection
- Because the transperineal approach passes needles through clean, disinfected skin rather than the bowel, the risk of a serious urinary infection is around one in one hundred, and severe sepsis is exceptionally rare at roughly one in five hundred. You receive a prophylactic dose of antibiotics, and you leave with clear instructions and 24/7 direct contact numbers.
Arranging it, and what it costs
A targeted biopsy is quoted individually, and you get the full figure before anything is booked.
A targeted transperineal biopsy is a theatre procedure, so the fee depends on the anaesthetic you have, the day-case facility and the pathology involved. We give you the complete figure in writing before anything is scheduled, and there are no separate invoices arriving afterwards.
Written and medically reviewed
Mr Ashwin Sridhar, Consultant Urological Surgeon
Last reviewed 1 September 2026.
Other guides worth reading
- What will this cost meWhat prostate diagnosis costsWhat the fee covers and what sits outside it, insurance or self-pay, and how the NHS route compares.
- My PSA came back raisedA raised PSA is not a diagnosisWhat the number actually means, the harmless reasons it rises, and who genuinely needs a scan.
- I need a prostate MRIPrivate prostate MRI at Harley StreetWhat the scan is like from arrival to going home, who cannot have one, and what your PI-RADS score means.
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