Prostate biopsy

A test that takes small tissue samples from the prostate, usually after an MRI scan, to find out whether a suspicious area contains cancer and, if so, how aggressive it is.

✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review

In short

A prostate biopsy is the test that confirms whether prostate cancer is present and how aggressive it looks; in the UK an MRI scan usually comes first.
Because it samples the prostate, a normal biopsy lowers the chance of significant cancer but cannot rule it out completely.
The transperineal route carries a much lower risk of serious infection (sepsis) than the older transrectal route.
A low-risk MRI (Likert 1 or 2) can sometimes mean a biopsy is safely avoided — this is a shared decision with your specialist.

A plain-English summary. The detail — including risks and recovery — is below.

At a glance

TypeDiagnostic tissue test (often MRI-guided)

AnaestheticLocal anaesthetic for transperineal; sometimes general; transrectal often without

How long it takesAbout 20–40 minutes

Hospital stayOutpatient or day case, no overnight stay

Time off workUsually none or a day; avoid heavy activity briefly

When you'll see resultsUsually about 1–2 weeks for the laboratory report

On the NHS?A standard NHS test on the suspected-cancer pathway; private care is used for speed or choice

A general guide. Your specialist will give you advice for your situation.

Best fit

Confirms whether prostate cancer is present, which examination and blood tests alone cannot

Pause if

Your MRI is low risk (Likert 1 or 2) and, after discussion, monitoring is a reasonable alternative to an immediate biopsy.

Main recovery point

You can usually go home the same day. Expect some blood in the urine and mild soreness. Drink plenty of fluids and take it easy; avoid heavy activity for...

Good aftercare

Clear written warning signs of infection and an urgent same-day contact route.

First 24 hours

You can usually go home the same day. Expect some blood in the urine and mild soreness. Drink plenty of fluids and...

First few days

Blood in the urine usually settles. Watch closely for fever, chills or difficulty passing urine, which can signal...

First few weeks

Blood in the semen can persist for several weeks and is usually harmless. Erections and ejaculation are not...

Result (about 1–2 weeks)

The laboratory report is usually ready in one to two weeks. You will be told the result and what it means for...

Medical line illustration of prostate biopsy needle pathway for Prostate biopsy. — Illustration only - not a diagnosis, medical advice or a promise of result. Your anatomy and treatment plan may differ. Vuemedics does not publish before-and-after photos.

What is a prostate biopsy?

A prostate biopsy takes small samples of tissue from the prostate so they can be examined under a microscope. It is the test that confirms whether prostate cancer is present and, if it is, how aggressive it looks (its grade).

In current UK practice, most men are offered a special MRI scan (multiparametric MRI) first. The scan helps decide whether a biopsy is needed at all, and guides the needles to any suspicious area. NICE recommends MRI as the first-line investigation, and a biopsy can sometimes be safely avoided when the scan looks low risk (a Likert score of 1 or 2), after discussing the pros and cons.

There are two main routes. Increasingly, samples are taken through the skin between the scrotum and back passage (the transperineal route), which carries a much lower risk of serious infection. The older transrectal (TRUS) route goes through the back-passage wall and carries a higher infection risk. A biopsy is a sampling test: a normal result lowers the chance of significant cancer but cannot completely rule it out, because the needles may miss a small area.

Types, options & approaches

There may be different ways to do this. The right approach depends on the clinical question and your circumstances.

MRI scan first (the modern pathway)

A multiparametric MRI is usually done before any biopsy. It can show whether a biopsy is needed and guides the needles to suspicious areas, improving accuracy.

Transperineal biopsy (often LATP)

Needles pass through the skin between the scrotum and back passage. This route has a much lower risk of serious infection and is increasingly the standard; often done under local anaesthetic.

Transrectal (TRUS) biopsy

Needles pass through the wall of the back passage under ultrasound. Quicker and often needs no general anaesthetic, but carries a higher infection and sepsis risk; used less than before.

Targeted versus systematic sampling

Targeted samples are aimed at the area the MRI flagged; systematic (template) samples are taken from across the prostate. Often both are done to improve accuracy.

Transperineal versus transrectal biopsy

Feature	Transperineal (LATP)	Transrectal (TRUS)
Route	Through skin behind the scrotum	Through the back-passage wall
Serious infection (sepsis)	Much lower	Higher
Anaesthetic	Local, sometimes general	Often none or local
Current UK trend	Increasingly the standard	Used less than before

The transperineal route is favoured mainly because it lowers the risk of serious infection. Your hospital's usual approach and your circumstances guide the choice.

Preparing for your test

Have your MRI scan and results discussed first, so you understand whether a biopsy is recommended and why.
Tell the team about blood thinners and ask which to pause and when; this is important before a biopsy.
Mention any heart-valve problem, recent infections, or a history of difficult-to-treat urine infections.
Give a urine sample if asked, so any infection can be treated before the test.
You will usually be prescribed antibiotics to take around the biopsy to reduce infection risk; take them exactly as directed.
For a transrectal biopsy you may be asked to use a small enema beforehand; for transperineal under local anaesthetic you can usually eat normally.
Arrange a lift home if you are having sedation or a general anaesthetic.

What happens

Most biopsies follow an MRI scan that has already shown whether and where to sample. You lie on a couch and the area is cleaned. For a transperineal biopsy, local anaesthetic numbs the skin between the scrotum and back passage (sometimes a general anaesthetic is used), and an ultrasound probe in the back passage helps guide the needles, which pass through the numbed skin.

For a transrectal biopsy, a thin ultrasound probe is placed in the back passage and the needles pass through its wall. In both, a spring-loaded needle takes several small cores of tissue, which feels like a quick click each time. The MRI images may be 'fused' with the live ultrasound so the needles target the suspicious area.

The test usually takes 20 to 40 minutes. You can normally go home the same day. Some blood in the urine, semen or (for transrectal) the back passage is common for a short while afterwards.

Is this test right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

May not be suitable if…

Your MRI is low risk (Likert 1 or 2) and, after discussion, monitoring is a reasonable alternative to an immediate biopsy.
You have an active urine infection that should be treated first.
A bleeding tendency or blood thinners that cannot be safely paused around the test.
A finding that is clearly better assessed by a different test or specialist first.
You are too unwell for the chosen anaesthetic, where the approach may need to change.

Delay or rearrange if…

You currently have a urine or other active infection.
Your blood-thinning medication has not been reviewed or safely paused.
Recent MRI images or PSA results needed to plan the biopsy are missing.
You have an unstable acute illness that makes the test unsafe right now.
You have not yet had the MRI results explained or the pros and cons discussed.

Alternatives to discuss

Repeating or reviewing the PSA blood test and tracking the trend.
Relying on a low-risk MRI with active monitoring instead of an immediate biopsy, after shared discussion.
A repeat MRI at an interval rather than biopsy in selected men.
Referral for specialist review if the picture is unclear, before sampling.
Choosing the transperineal route if infection risk is a particular concern.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

What matters most to me?

Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.

What are all my options?

Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.

What would make me pause?

Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.

What happens if I do nothing today?

For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.

Comfort, sedation or contrast choices

If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.

Local anaesthetic

Commonly used for transperineal biopsy (LATP); numbs the area while you stay awake.

General anaesthetic

Sometimes used for transperineal biopsy, for example for larger template sampling or patient comfort.

No or minimal anaesthetic

Transrectal biopsy is often done with little or no anaesthetic, as it is quicker.

Benefits

Confirms whether prostate cancer is present, which examination and blood tests alone cannot
Shows how aggressive any cancer looks (its grade), which guides treatment
MRI guidance helps target suspicious areas and improves accuracy
Helps avoid over-treating slow-growing disease by clarifying risk
A reassuring result, alongside a low-risk MRI, can support a decision to monitor rather than treat

Risks & complications

More common

Blood in the urine for a few days
Blood in the semen, which can last a few weeks and look alarming but is usually harmless
Some soreness or bruising at the biopsy site, or in the back passage after transrectal biopsy
A short-lived difficulty or stinging when passing urine

Less common

Urine infection needing antibiotics
Temporary difficulty passing urine, occasionally needing a catheter for a short time
Heavier or more prolonged bleeding than expected
The biopsy missing a cancer that is present (a false-negative result)

Rare but serious

Serious infection (sepsis) that can make you very unwell and need hospital treatment — markedly less likely with the transperineal route
Significant bleeding needing medical attention
Being unable to pass urine at all (acute retention)

The most important risk is infection, especially serious infection (sepsis), which is higher with the transrectal route than the transperineal route. Tell the team about blood thinners and any history of difficult urine infections, and take the antibiotics exactly as directed. Just as important is understanding the limits of the test: because it samples the prostate, a normal result lowers but does not remove the chance of significant cancer, so ask what the plan is if the result is normal, abnormal or unclear.

Published figures to discuss

A biopsy is generally low risk, but the chance of infection depends strongly on the route, and the chance of missing a cancer depends on the MRI, the targeting and how many samples are taken. The figures below are cautious and drawn from UK guidance and reviews; false-negative results matter as much as the physical risks.

Figure	Reported range	How to interpret it	Source / confidence
Serious infection (sepsis), transrectal route	Roughly under 1 in 100 (about 1%)	A key reason the transperineal route is increasingly preferred.	Impact of pre-biopsy MRI on screening outcomes (rapid review) — PMCpmc.ncbi.nlm.nih.govPublished figure
Serious infection (sepsis), transperineal route	Markedly lower than transrectal (well under 1%)	Antibiotics are still given; the transperineal route avoids passing needles through the bowel wall.	Impact of pre-biopsy MRI on screening outcomes (rapid review) — PMCpmc.ncbi.nlm.nih.govPublished figure
Biopsies avoided by doing MRI first	Around 27–30% of men avoided an unnecessary biopsy in trials such as PROMIS and PRECISION	MRI-first triage also improves detection of significant cancer.	Impact of pre-biopsy MRI on screening outcomes (rapid review) — PMCpmc.ncbi.nlm.nih.govPublished figure
Cancer missed (false negative)	Varies with MRI and sampling; a normal biopsy cannot fully exclude cancer	Why PSA monitoring or a repeat assessment is sometimes advised after a normal result.	Guide sourcesClinical context
Difficulty passing urine needing a catheter	Uncommon and usually short-lived	More likely in men who already have urinary symptoms or a large prostate.	Guide sourcesClinical context

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

What happens afterwards

There is usually little physical recovery from a prostate biopsy, but you should expect some blood in the urine and semen and watch for signs of infection while you wait for the result.

First 24 hours

You can usually go home the same day. Expect some blood in the urine and mild soreness. Drink plenty of fluids and take it easy; avoid heavy activity for a day.

First few days

Blood in the urine usually settles. Watch closely for fever, chills or difficulty passing urine, which can signal infection and need urgent attention.

First few weeks

Blood in the semen can persist for several weeks and is usually harmless. Erections and ejaculation are not usually affected by the biopsy itself.

Result (about 1–2 weeks)

The laboratory report is usually ready in one to two weeks. You will be told the result and what it means for monitoring or treatment.

After the result

Depending on the findings, you may be offered active monitoring, further tests, or a discussion of treatment options. A normal result may still mean continued PSA checks.

What's normal — and not a worry

Blood in the urine for a few days
Blood in the semen for up to a few weeks
Mild soreness or bruising at the biopsy site
A short period of stinging when passing urine
Some natural anxiety while waiting for the result

Aftercare

Drink plenty of fluids in the first day or two to help flush the urinary system.
Take the full course of any antibiotics you are given.
Avoid heavy lifting and strenuous exercise for a day or so.
Expect blood in the semen for a few weeks and avoid alarm; use protection if a partner could be pregnant and you are unsure.
Know the warning signs of infection and exactly who to contact, including out of hours.
Note when and how you will get your result, and who will explain it.
Continue any plan for PSA monitoring agreed with your specialist.

Before your test

MRI scan done and results discussed first
Blood-thinner plan agreed in advance
Antibiotics collected and instructions understood
Lift home arranged if having sedation or general anaesthetic
Warning signs of infection and a contact number written down
Date and method for getting the result noted

Scars and how they heal

There is no surgical scar. The transperineal route leaves tiny needle-puncture points in the skin behind the scrotum, which heal quickly; the transrectal route leaves no external mark. Some bruising in the area is normal.

⚠ Get urgent help if…

A high temperature, shivering or feeling very unwell — possible serious infection, seek urgent help the same day
Being unable to pass urine at all
Heavy bleeding in the urine, or large clots
Heavy or persistent bleeding from the back passage (after transrectal biopsy)
Severe pain in the lower abdomen or perineum
Feeling faint, confused or rapidly more unwell

Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your specialist gives you.

Results & realistic expectations

A good result clarifies your situation: it either finds no significant cancer or identifies cancer and shows how aggressive it looks, which guides what to do next. Results usually take one to two weeks. The grade (for example a Gleason score or grade group) matters as much as whether cancer is found, because some prostate cancers grow very slowly and may be monitored rather than treated.

A prostate biopsy is a sampling test. A normal result lowers the chance of significant cancer, especially alongside a low-risk MRI, but cannot prove the prostate is entirely free of cancer, since the needles can miss a small area. This is why ongoing PSA checks or a repeat assessment are sometimes advised even after a normal biopsy.

How long it lasts

A biopsy result reflects the prostate at the time it was taken. Cancer can develop or change later, so PSA monitoring and, sometimes, a repeat MRI or biopsy may be advised over time, particularly if PSA rises or symptoms change. A normal result does not mean you never need checking again.

Related tests, treatments or support

A prostate biopsy is usually combined with, and guided by, a multiparametric MRI scan, and is interpreted alongside your PSA blood test and examination. If cancer is found, further tests such as scans to check whether it has spread may follow, depending on its grade and your PSA.

Follow-up & long-term care

You will be told your result, usually within one to two weeks, and what it means. Depending on the findings you may be offered active monitoring, a repeat test, or a discussion of treatment. Even after a normal result, a plan for PSA monitoring or repeat assessment is often sensible.

Keep to any agreed PSA monitoring schedule.
Report new urinary symptoms or bone pain to your specialist.
Attend any planned repeat MRI or biopsy if PSA rises or concerns remain.
Discuss family history, as it can affect how closely you are monitored.

Repeat, follow-on and what comes next

If the result is unclear or does not match the MRI, a repeat or different biopsy may be advised.
A normal biopsy with ongoing concern often leads to PSA monitoring and sometimes a repeat MRI.
Active monitoring may include repeat biopsies over time to check that any low-grade cancer is not progressing.
MRI-first pathways aim to reduce unnecessary repeat sampling.

Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.

What good aftercare looks like

Clear written warning signs of infection and an urgent same-day contact route.
A defined date and method for getting the result, with someone to explain it.
A shared plan for monitoring or treatment based on the findings.
Continued PSA monitoring or repeat assessment where appropriate, even after a normal result.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

Whether an MRI scan is included and reported by a specialist radiologist
The biopsy route (transperineal often needs more time and sometimes a general anaesthetic)
Sedation or general anaesthetic versus local anaesthetic
Number of samples taken and laboratory (pathology) analysis
Day-case facility and recovery charges
Follow-up consultation to explain the result and plan next steps

Make sure your written quote includes

Whether the MRI scan and its specialist report are included
The biopsy route and whether sedation or general anaesthetic adds cost
Laboratory (pathology) analysis of the samples
Day-case facility and any anaesthetist fee
A follow-up appointment to explain the result and agree next steps
What happens, and what it costs, if the result is unclear and a repeat test is needed

On the NHS? A prostate biopsy is a standard NHS test on the suspected-cancer pathway, usually after an MRI scan; private care is sometimes used for speed, choice of timing or a chosen specialist.

You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.

Choosing a specialist safely

Check the specialist is on the GMC Specialist Register for this area.
Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
You're entitled to your total cost in writing — including any follow-up — before you decide.

How Vuemedics verifies every consultant →

Questions to ask your medical professional

Take this to your consultation. A good specialist will welcome every one of these.

Given my MRI result, do I actually need a biopsy now, or could monitoring be reasonable?
Will my biopsy be transperineal or transrectal, and why — and what is my infection risk?
What will the result change for me?
What happens if the result is normal, abnormal or unclear?
If cancer is found, how will you tell how aggressive it is and what it means?
What is the plan for PSA monitoring after the biopsy?
Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
Will you be the specialist who carries out my test, and who looks after me afterwards?
What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
What does a realistic result look like — and what can this test not achieve?
What are my options, including waiting, doing nothing for now, or choosing a different approach?
Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Frequently asked questions

Do I need a biopsy if I have already had an MRI?

Not always. NICE recommends MRI first, and if the scan looks low risk (a Likert score of 1 or 2) a biopsy can sometimes be safely avoided after discussing the pros and cons. If the scan flags a suspicious area, a targeted biopsy is usually advised.

Which is safer, transperineal or transrectal?

The transperineal route carries a much lower risk of serious infection (sepsis) and is increasingly the standard. The transrectal route is quicker and often needs no general anaesthetic but has a higher infection risk.

Does a normal result mean I definitely do not have cancer?

No. A biopsy samples the prostate, so it can miss a small cancer. A normal result lowers the chance of significant cancer, especially with a reassuring MRI, but ongoing PSA monitoring may still be advised.

How serious is the infection risk?

Most men have no infection. Serious infection (sepsis) is uncommon and is markedly less likely with the transperineal route; with the transrectal route it occurs in roughly under 1 in 100. Antibiotics are given to reduce the risk.

Will it affect my erections or fertility?

The biopsy itself does not usually affect erections or fertility. Blood in the semen is common for a few weeks and is harmless. Any later effects relate to treatment of cancer, not the biopsy.

How long until I get the result?

Usually about one to two weeks for the laboratory report. You should be told who will explain it and what the next steps are.

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How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: NICE NG131 — Prostate cancer: diagnosis and management (recommendations) Prostate Cancer UK — Prostate biopsy Prostate Cancer UK — MRI scan before biopsy Impact of pre-biopsy MRI on screening outcomes (rapid review) — PMC Transperineal versus transrectal biopsy: efficacy and safety meta-analysis — PMC

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.