Health condition · Clinically reviewed
HPV & abnormal smear, colposcopy, LLETZ and follow-up plainly explained.
HPV-positive screening results and abnormal cervical cytology. The colposcopy pathway is well-defined, LLETZ treats high-grade CIN, and follow-up prevents cervical cancer.
Why trust this guide
- 01
Clinically reviewed
Written by our editorial team and reviewed by a registered UK clinician before publication.
- 02
Sourced from guidance
Every claim is checked against NHS, BSCCP or NICE sources you can see at the end.
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Current for 2026
Reflects the current NHS Cervical Screening Programme HPV-primary pathway.
Key facts
HPV & abnormal smear at a glance.
The essentials, in plain English — what the result means, what happens next, and how the NHS pathway is designed to prevent cervical cancer.
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What it is
An HPV-positive result on cervical screening, with or without cytological abnormality on the smear sample.
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Why it matters
High-risk HPV types drive almost all cervical cancers — a positive result is the first branch point on the screening pathway.
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Cytology grades
Borderline changes, low-grade dyskaryosis or high-grade dyskaryosis — each has a defined next step.
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Next test
Colposcopy is the follow-up test after an abnormal screening result — it looks at the cervix under magnification.
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Treatment
LLETZ (loop excision) treats confirmed CIN2/3. Most people need no treatment at all.
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Prevention
HPV vaccination prevents most cases and is offered on the NHS to school-age children and some adults.
Why this guide matters
Answers that take the fear out of the letter.
An abnormal-smear letter is worrying. The three points below shape everything else on this page.
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HPV-positive is not cancer
Most HPV infections clear on their own — the test is designed to catch changes long before cancer develops.
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The pathway is well-defined
Every result has a clear next step — repeat, colposcopy, or treatment — set by national guidance.
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LLETZ is highly effective
A single LLETZ treatment clears CIN2/3 in the great majority of cases, confirmed by test-of-cure at 6 months.
How the pathway works
From smear to test-of-cure.
The steps in the NHS Cervical Screening Programme, in order — so you know what to expect at each stage.
Phase 1 · Screening
Testing for HPV and, if positive, cytology
Phase 2 · Colposcopy
Magnified assessment and biopsy grading
Phase 3 · Treatment
LLETZ if needed, then test-of-cure
- 01
Screening
Cervical screening
A smear tests for high-risk HPV first. If HPV-positive, the same sample is checked for cell changes (cytology).
- 02
Screening
Repeat or referral
HPV-positive with normal cytology means a repeat in 12 months. HPV-positive with any dyskaryosis means colposcopy referral.
- 03
Colposcopy
Colposcopy
A magnified look at the cervix, using acetic acid and Lugol’s iodine to highlight abnormal areas.
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Colposcopy
Biopsy
A small tissue sample is taken from any abnormal area for the lab to grade.
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Colposcopy
Grade CIN
The biopsy is reported as CIN1 (low-grade), CIN2 or CIN3 (high-grade) — this decides whether treatment is needed.
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Treatment
LLETZ if CIN2/3
A loop of thin wire removes the abnormal area under local anaesthetic — a 10–15 minute outpatient procedure.
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Treatment
Test-of-cure follow-up
A single HPV test at 6 months after treatment. If negative, you return to routine screening.
Typical timeline: weeks from the letter to colposcopy, and 6 months from any treatment to a settled test-of-cure.
What the result shows
The results you might see on your letter.
Each result has a defined next step. These are the categories you will see on an NHS screening letter, and what each one means.
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HPV-positive result
Most people clear HPV within 1–2 years — a positive result is not cancer.
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Borderline changes
Mild cell changes on cytology — colposcopy for review, treatment rarely needed.
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Low-grade dyskaryosis
Low-grade changes (CIN1 on biopsy) — usually watched rather than treated.
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High-grade dyskaryosis
High-grade changes suggest CIN2/3 — LLETZ treatment is usually offered.
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Post-coital bleeding
Bleeding after sex should always be assessed — not always cancer, but never ignored.
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Inter-menstrual bleeding
Bleeding between periods with an abnormal smear needs prompt gynaecology review.
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Pregnancy considerations
Colposcopy is safe in pregnancy; LLETZ is usually deferred until after delivery.
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Red flag
Post-coital bleeding with a friable cervix or a visible mass — 2-week-wait gynaecology referral.
Treatment
How abnormal smears are managed in the UK.
Most people need no treatment at all. Where CIN2/3 is confirmed, LLETZ is the standard option — followed by a single test-of-cure at 6 months.
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Repeat screening
HPV-positive with normal cytology: a repeat test in 12 months to see if HPV has cleared.
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Colposcopy + biopsy
Magnified assessment of the cervix, with directed biopsies of any abnormal areas.
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LLETZ for CIN2/3
Large loop excision of the transformation zone — outpatient, local anaesthetic, high cure rate.
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Cold coagulation
A heat-based alternative to LLETZ for selected low-grade lesions.
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Cone biopsy
A larger, deeper excision in specialist care for glandular disease or unclear margins.
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HPV vaccination
Offered after treatment in some centres — reduces recurrence risk from other HPV types.
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Test-of-cure follow-up
A single HPV test 6 months after treatment — the key step that closes the loop.
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Support for anxiety
Jo’s Cervical Cancer Trust and NHS resources — the wait and treatment can be genuinely stressful.
What this guide is based on
The sources behind every claim on this page.
UK national guidance and specialist society standards, current at the time of last review.
Key references
Guidelines and standards we relied on.
A quiet reminder
This guide is for information, not medical advice.
Your GP or colposcopist knows your history and can tell you which parts apply to you. If in doubt, ask them to talk you through your letter.
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NHS Cervical Screening Programme. HPV-primary screening pathway.
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British Society for Colposcopy and Cervical Pathology (BSCCP). Colposcopy and treatment standards.
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NICE. Cervical cancer guidance and referral criteria.
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Jo’s Cervical Cancer Trust. Patient information and support.
Red flags
When an abnormal smear needs urgent attention.
Most abnormal smears do not lead to cancer. These are the patterns that need faster action — do not wait for the next routine appointment.
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Cervical cancer diagnosis
A biopsy confirming invasive cancer — urgent gynae-oncology referral and staging.
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Persistent post-coital bleeding
Any repeated bleeding after sex — always assessed, even with a normal recent smear.
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Cervical mass
A visible or palpable mass on the cervix — 2-week-wait gynaecology referral.
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Pregnancy with high-grade result
Colposcopy is done; treatment is usually deferred — specialist input is essential.
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Immunosuppression + HPV
HIV, transplant or long-term steroid use — lower threshold for colposcopy and closer follow-up.
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Post-treatment recurrence
A positive test-of-cure or new abnormal cells after LLETZ — repeat colposcopy.
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Coexisting gynae cancer
Any other suspected gynaecological cancer — refer the whole picture, not just the smear.
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Vaccination gap
Missed HPV vaccination — check catch-up eligibility with your GP or sexual health service.
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Family history
A first-degree relative with cervical or other HPV-related cancer — flag it at your next screen.
Living with it
A well-defined pathway, and a very good outcome.
Four things that make the biggest difference — attending screening, vaccination, recovery care and looking after your mental health.
A quiet reminder
The test does the work — attending it matters most.
HPV-primary screening is very sensitive. Attending on time is the single biggest step you can take to prevent cervical cancer.
- 01 Screening
Do not skip your smears
HPV-primary screening is far more sensitive than the old cytology-only test — attending is the single biggest step you can take.
- 02 Vaccination
Ask about the vaccine
HPV vaccination is offered to school-age children and some adults on the NHS — check eligibility if you were missed.
- 03 After LLETZ
Recovery takes a few weeks
Expect light bleeding or discharge for up to 4 weeks. Avoid tampons, swimming and sex during that time.
- 04 Mental health
The wait is the hardest part
Anxiety between smear and colposcopy is very common — Jo’s Cervical Cancer Trust has a helpline that can help.
Frequently asked
Everything we get asked about HPV and abnormal smears.
Quick answers on results, colposcopy, LLETZ, fertility and vaccination.
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What does an HPV-positive result mean?
It means the screening test found a high-risk type of HPV in your cervical sample. HPV is very common and most infections clear on their own — an HPV-positive result is not cancer.
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What is dyskaryosis?
Dyskaryosis is a term for abnormal cell changes on the smear sample. It is graded as borderline, low-grade or high-grade. Only a biopsy at colposcopy can confirm what the changes actually are (CIN).
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Do I always need colposcopy after an abnormal smear?
Not always. HPV-positive with normal cytology means a repeat smear in 12 months. HPV-positive with any dyskaryosis, or persistent HPV, means colposcopy.
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What is LLETZ and does it hurt?
LLETZ (large loop excision of the transformation zone) removes the abnormal area using a fine wire loop under local anaesthetic. Most people feel pressure but not pain — it is an outpatient procedure taking around 10–15 minutes.
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Will HPV or LLETZ affect my fertility?
A single LLETZ treatment does not affect fertility. Multiple or deep excisions can slightly increase the risk of preterm birth, which is why the smallest safe excision is always taken.
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When should I have the HPV vaccine as an adult?
The NHS offers HPV vaccination to school-age children and to some adults (including men who have sex with men up to age 45). Speak to your GP or sexual health clinic about catch-up eligibility.
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