NHS vs Private DNA Testing UK (2026): What the NHS Funds, What You Pay For
The 30-second answer
The NHS funds DNA testing that is medically necessary — diagnostic genetic testing for inherited disease, NIPT for higher-chance prenatal screening, pharmacogenomics where it affects treatment. The NHS does not fund paternity, ancestry, peace-of-mind kinship, or direct-to-consumer wellness DNA. If your test is on the NHS list and you qualify, NHS is almost always the right route. If it isn't, private is your only option. This guide tells you which is which.
"Can I get this on the NHS?" is the most-asked question on every DNA-related private health forum in the UK. The answer is more nuanced than yes or no — it depends entirely on what you want tested and why. This guide is the complete map: which DNA tests the NHS funds free at the point of use, which it does not, which categories sit in a grey zone, and how to make the right call for your situation in 2026.
Quick reference: NHS-funded vs private only
| Test type | NHS-funded? | Private cost (2026) |
|---|---|---|
| Paternity (postnatal home) | ❌ Never | £89–£169 |
| Paternity (legal/court-admissible) | ⚠️ Only by court order via Legal Aid | £285–£500 |
| Prenatal paternity (NIPP) | ❌ Never | £700–£1,200 |
| Sibling, grandparent, avuncular kinship | ❌ Never (except court-ordered) | £149–£500 |
| NIPT (T21/T18/T13 prenatal screening) | ✅ If combined screening higher-chance | £300–£600 |
| Amniocentesis / CVS (diagnostic prenatal) | ✅ With medical indication | £800–£1,500 |
| BRCA1 / BRCA2 (hereditary cancer) | ✅ If meet family-history criteria | £200–£600 |
| Familial hypercholesterolaemia | ✅ If clinical criteria met | £250–£500 |
| Carrier testing (CF, SMA, etc.) | ⚠️ Mixed — partner of affected, yes | £199–£400 |
| Whole-genome sequencing | ⚠️ Rare exome/genome via clinical genetics | £800–£3,000 |
| Pharmacogenomics | ⚠️ Specific drugs (DPYD, TPMT, etc.) | £150–£400 |
| Ancestry / ethnicity | ❌ Never | £49–£149 |
| Wellness / trait DNA (consumer kits) | ❌ Never | £59–£299 |
| Genetic coeliac test (HLA-DQ2/8) | ⚠️ With clinical indication | £149–£249 |
| Genetic lactose intolerance | ❌ Not routinely | £99–£159 |
How the NHS decides what to fund
NHS-funded DNA testing in 2026 is governed by the National Genomic Test Directory, a publicly published list maintained by NHS England Genomic Medicine Service. The directory specifies which clinical indications qualify for NHS-funded genetic and genomic testing, which tests are appropriate for each indication, and which patients are eligible. It runs to several thousand entries and is updated regularly.
The high-level principle is consistent: NHS DNA testing is offered when the result will materially change clinical management. That includes:
- Diagnosing or ruling out an inherited condition where treatment, screening or family planning would change based on the result.
- Predictive testing in families with a confirmed inherited cancer predisposition or other actionable condition.
- Carrier testing in partners of known carriers for autosomal-recessive conditions, where the result would inform reproductive choices.
- Prenatal screening and diagnosis via NIPT (where combined screening is higher-chance) and amniocentesis/CVS (where there is a separate medical indication).
- Pharmacogenomic testing for specific drug-gene pairs where the result affects safe dosing — e.g. DPYD before fluoropyrimidine chemotherapy, TPMT before thiopurines.
Tests outside this framework — paternity, ancestry, peace-of-mind kinship, consumer wellness DNA — are considered non-medical and are not funded. The NHS does not view paternity testing as medical care; it views it as a personal or legal matter. The same applies to ancestry and trait testing.
Paternity and kinship: always private, except by court order
Paternity, prenatal paternity, sibling, grandparent and avuncular DNA testing are uniformly not NHS-funded in 2026. This is not a budget question — it is a policy view that these tests answer relationship rather than medical questions, and the NHS does not fund relationship testing.
The one exception is testing ordered by a UK family court as part of legal proceedings. In contested paternity, child residence, or immigration cases, the court can order court-admissible DNA testing. Costs are typically borne by one or both parties; Legal Aid may cover the cost where one party qualifies. The court-ordered test is procedurally identical to a private legal paternity test — same labs, same chain-of-custody requirements — but the order makes participation legally compellable in a way private testing cannot.
For everything else paternity-related, private is your only route. Our detailed guides:
- Paternity DNA Test UK — postnatal home vs legal, costs £89–£500.
- Prenatal Paternity Test UK (NIPP) — from 8 weeks of pregnancy, £700–£1,200.
- Sibling DNA Test UK — when the alleged father is not available.
- Grandparent and Avuncular DNA Tests UK — indirect paternity via the alleged father's relatives.
- Legal vs Peace-of-Mind DNA Tests UK — when chain-of-custody actually matters.
Prenatal genetic testing: a genuinely split market
Prenatal genetic testing is the one DNA category where NHS and private offerings genuinely overlap, and where the choice between them is not obvious.
NHS prenatal pathway
Every pregnant woman in the UK is offered combined first-trimester screening (nuchal translucency scan + PAPP-A + free β-hCG) at 11–14 weeks. If the result returns a higher-chance probability of T21, T18 or T13 (defined as 1 in 150 or higher), the NHS offers NIPT as a second-line contingent screen — free of charge. If NIPT is also higher-chance, the NHS offers diagnostic amniocentesis or CVS at a fetal medicine unit, free of charge. Diagnostic results are definitive.
The NHS pathway is medically excellent for those who qualify. It is free, integrated with antenatal care, and connects directly to fetal medicine specialists and counselling.
Where private adds value
Three groups genuinely benefit from private prenatal genetic testing:
- Women whose combined screening is lower-chance but who want NIPT-level reassurance. NHS NIPT is not offered to this group. Private NIPT at £300–£600 gives ~99% T21 detection vs the ~85% of combined screening. This is the largest private NIPT market.
- Women who want extended panels. NHS NIPT screens only for T21/T18/T13. Private NIPT extended panels add sex-chromosome aneuploidies and microdeletions (£450–£600).
- Women who want earlier fetal sex disclosure. NHS does not report fetal sex via NIPT; disclosure is at the 18–21 week anomaly scan. Private NIPT discloses sex from 10 weeks.
See our NIPT UK guide for the full private vs NHS breakdown including who genuinely benefits and who does not.
Inherited disease testing: NHS first, always
For DNA testing related to a possible inherited condition — hereditary breast or ovarian cancer (BRCA1/BRCA2), familial hypercholesterolaemia, cystic fibrosis carrier status, Huntington's disease, Lynch syndrome, paediatric developmental conditions, and many others — the NHS pathway via clinical genetics is almost always the better route.
Why:
- It's free. NHS genetic testing for eligible indications has no cost to the patient.
- It comes with counselling. Genetic counsellors and clinical geneticists interpret results in context, explain implications for family members, and arrange cascade testing where appropriate.
- The follow-up is integrated. A confirmed BRCA1 mutation routes directly to NHS high-risk breast cancer surveillance and risk-reducing surgery pathways. A confirmed familial hypercholesterolaemia diagnosis routes to NHS lipid clinics. The result is actionable within the system that generated it.
- Accuracy is at least as good. NHS genomic laboratories operate to UKAS ISO 15189 standards, sometimes do the same testing the major private labs do (often via the same underlying lab facilities), and have access to expertise not available in consumer DTC platforms.
The route is: GP appointment → referral to clinical genetics (or directly to relevant specialty for cancer or cardiac risk) → assessment against the National Genomic Test Directory → testing where eligible → results with counselling. The whole pathway typically takes 3–6 months for non-urgent cases, faster where there is acute clinical need.
When private may still make sense for inherited disease
Private DNA testing for inherited disease has narrow but legitimate uses:
- You do not meet NHS criteria but want testing anyway. The NHS has defined thresholds — for example, BRCA testing is generally offered to those with a sufficient family history score or Ashkenazi Jewish heritage. Some women below the threshold want testing for personal reasons. Private routes exist (£200–£600 from major UK labs) but any positive result will route back to NHS clinical genetics for confirmation and management anyway.
- You want to skip the NHS wait time. Where clinical urgency is moderate, the NHS pathway can take months. Some patients pay privately for the testing itself, then present results to NHS for management. Be cautious: NHS may require repeat confirmation before acting clinically.
- You want a result that doesn't enter your NHS record. Private testing results sit outside the NHS record unless you choose to share them. This matters occasionally for insurance, employment or personal preference reasons. UK genetic discrimination protections are imperfect.
Ancestry and consumer DNA testing: always private
AncestryDNA, MyHeritage, Living DNA, 23andMe, and the broader category of consumer DNA testing kits are not and will never be NHS-funded. The NHS does not view ethnicity, ancestry, or trait-prediction DNA testing as medical care. UK prices in 2026 sit at £49–£149 for ancestry-focused kits, with health-and-trait packages running £79–£299.
We have a separate detailed guide on the consumer market: Ancestry DNA Tests UK — including AncestryDNA vs MyHeritage vs Living DNA, what these tests can and cannot tell you, and where the value sits.
How to decide which route is right for you
A practical three-step framework:
- Is the question medical? Inherited disease risk, prenatal screening, pharmacogenomics, carrier testing for reproductive planning — yes. Paternity, ancestry, "interesting" traits — no.
- If medical, talk to your GP first. Ask whether you meet the National Genomic Test Directory criteria for the testing you are interested in. If yes, NHS route is free, comes with counselling, and is integrated with follow-up care. If no, the GP can say so, and you have an informed basis for considering private.
- If non-medical or NHS-ineligible, choose a UKAS-accredited UK provider. For paternity, our guide picks based on price, lab accreditation and turnaround. For ancestry, our guide explains what each consumer brand actually offers. For everything else, follow the same principle: UKAS accreditation, transparent pricing, in-UK analysis where possible.
Honest cost comparison
For tests the NHS funds and you qualify for, NHS is free at the point of use. Private equivalents for the same NHS-eligible tests typically cost:
- BRCA1/BRCA2: £200–£600 private (vs free NHS for eligible patients)
- NIPT: £300–£600 private (vs free NHS for higher-chance combined screening results)
- Familial hypercholesterolaemia testing: £250–£500 private (vs free NHS for eligible)
- Exome / whole-genome sequencing: £800–£3,000 private (vs free NHS in rare-disease pathway)
For tests the NHS does not fund, there is no NHS comparison and private is the only route:
- Postnatal paternity: £89–£500
- Prenatal paternity (NIPP): £700–£1,200
- Sibling / grandparent / avuncular: £149–£500
- Ancestry: £49–£149
- Consumer wellness/trait kits: £59–£299
Risks of going private when NHS would have worked
The most common mistake we see in UK private DNA testing is paying for a test that the NHS would have done for free, with better follow-up, if the patient had asked first.
- BRCA testing on a sufficient family history. Patients sometimes pay £200– £600 privately, then route back to NHS for confirmation and management. The private result is informational; the NHS pathway from the start would have been free.
- Suspected familial hypercholesterolaemia. Adults with a personal history of early heart disease or untreated cholesterol above 7.5 mmol/L often qualify for NHS testing. Paying privately first is sometimes faster but is often unnecessary.
- Paying for NIPT when combined screening was higher-chance. If you've had a higher-chance combined screening result, the NHS will offer NIPT free. Paying privately before that conversation duplicates a test you would have got for free.
The general rule: ask your GP whether the NHS would offer it, before you pay privately. Five minutes of conversation can save hundreds of pounds.
Risks of relying on NHS when private would have served better
The mirror mistake: assuming the NHS will offer something, when it won't.
- Paternity questions. The NHS does not offer paternity testing in any non-court context. Waiting for an NHS route that doesn't exist is just delay.
- NIPT for lower-chance combined screening. The NHS only offers NIPT when combined screening is higher-chance. If you want NIPT-level reassurance and your screening was lower-chance, private is your only route.
- Faster turnaround. NHS clinical genetics waits can be 3–6 months. Where clinical urgency is moderate but real, private may be the right route purely on timing.
Related guides
- Paternity DNA Test UK — home vs legal, costs £89–£500.
- Prenatal Paternity Test UK (NIPP) — from 8 weeks of pregnancy.
- NIPT UK — fetal genetic screening, NHS vs private detail.
- Sibling DNA Test UK
- Grandparent and Avuncular DNA Tests UK
- Legal vs Peace-of-Mind DNA Tests UK
- Ancestry DNA Tests UK
- All UK DNA testing guides