Tested After Your Policy Started? They Cannot Ask.

A genetic test taken after your life insurance policy has started cannot be used against that policy. An insurer will not ask about it, cannot use it to change your premium, terms or sum assured, and cannot use it when assessing a claim. Your cover is fixed by what you disclosed when you applied, and a result that arrives later sits outside it.

This is one of the few genuinely reassuring positions in a subject that usually is not. It exists because the UK Code on Genetic Testing and Insurance draws a firm line at the date cover begins: a predictive genetic test result obtained after that date is off-limits to the insurer, both while the policy runs and at the point a claim is made.

There are two sensible caveats, and both are about honesty at the start rather than the test at the end. The insurer can still check that your original application was answered accurately, and increasing or replacing your cover later counts as a fresh application. Neither of those undoes the basic protection for a genuine later test.

The short answer: a later test cannot touch an existing policy

Once your life cover is in force, its price and terms are settled. They were set on the basis of the health, family history and lifestyle information you gave when you applied, and the contract does not contain a mechanism for the insurer to revisit that because of something you learn about your genes afterwards.

A predictive genetic test — one that looks at your DNA to say whether an inherited condition might develop in future — is specifically protected here. If you have such a test six months or six years into the policy, the insurer has no right to ask for the result, no right to use it to raise your premium or alter your cover, and no right to bring it out when you or your family claim. The protection is not a favour granted case by case; it is a standing commitment.

That is a deliberately strong position, and it is meant to be. The whole reason the protection exists is so that fear of insurance consequences does not stop people having tests that could benefit their health.

It does not matter, for this purpose, where the test came from. A predictive result from an NHS clinical test and a predictive result from a shop-bought direct-to-consumer kit are treated the same way: neither can be asked for or used against a policy you already hold. The protection attaches to what the test is — a predictive look at your DNA — not to who carried it out.

Why your policy is fixed at the date you applied

Life insurance is underwritten at the outset. You disclose, the insurer assesses, a price is set, and the policy is issued. From that moment the risk is the insurer's, and it cannot come back later to re-rate you because your circumstances changed — you developed a health condition, took up a dangerous hobby, or, in this case, had a genetic test. That is precisely the certainty you are buying.

This is why a later diagnosis of any kind does not raise the premium on cover you already hold, and a genetic result is treated the same way. The policy is a fixed contract, not a subscription that is repriced as new information appears. It is also why getting cover in place while you are well is worth doing, a point we make in the wider context of what changes if you have a genetic test after cover started, which walks through the same reassurance from a reader's own situation.

What the Code commits insurers to

The rules come from the Code on Genetic Testing and Insurance published by the Association of British Insurers, a voluntary agreement between the insurance industry and government that participating insurers sign up to. Its central commitment is that insurers will not ask for, and will not take account of, the result of a predictive genetic test.

There is one narrow exception, and it is easy to state. A Huntington's disease result may be asked about, but only where the total life cover applied for is above £500,000. Nothing else is on that list. So a predictive result for any other condition — a BRCA fault, a cardiomyopathy gene, an APOE variant from a shop-bought kit — is simply never askable for life cover.

Source: HM Government and Association of British Insurers, Code on Genetic Testing and Insurance.

The Code is voluntary, but the large insurers adhere to it, and it is reviewed periodically by government and the industry together — a 2025 review looked again at how it works in practice. One feature worth knowing is that it runs one way in your favour: while an unfavourable predictive result cannot be asked for, you are allowed to volunteer a favourable one, such as testing negative for a fault known to run in your family. Nothing here obliges you to hand over a result you would rather keep private.

The commitment applies whenever the test was taken, but it is at its most absolute for a test taken after cover began, because at that point the result has no bearing on a risk the insurer already accepted. This is the same principle that means a predictive result of any kind is the result an insurer cannot ask you for when you apply in the first place.

At the claims stage: what can and cannot be examined

The moment people really worry about is the claim, because that is when an insurer looks closely at a policy. Here the Code is explicit that a predictive genetic test result obtained after the policy started is not to be used in assessing the claim. A later test cannot become the reason a payout is reduced or refused.

What an insurer can do at a claim, as with any policy, is check that the original application was answered accurately. That is a separate question governed by the duty to take reasonable care not to make a misrepresentation. If everything you were asked at application was answered honestly and carefully, a genetic test you had afterwards changes none of it. If something you already knew at the time was mis-stated, that can be examined — but the trigger is the original answer, not the later gene result.

In practice this means the two things sit in different boxes. The later test is protected outright. The original application is judged on what you knew and disclosed when you signed it. Keeping your own copy of the answers you gave is a small, sensible protection, because it lets you show what was asked and what you said if a claim is ever queried.

A worked example makes the boundary clear. Suppose you took out a policy at 40, answered every question honestly, and at 45 had a predictive test that flagged a raised risk of an inherited condition. If a claim arises, the insurer cannot look at that 45-year-old result at all. What it can look at is whether, back at 40, you accurately answered what you were asked — about your own health, your symptoms, and any family history within the questions posed. If you did, the later result is simply irrelevant to the claim. The test that frightened you is not the test that gets examined.

Predictive versus diagnostic, and the one exception

The protection is for predictive tests — those done when you have no symptoms, to estimate future risk. A diagnostic genetic test is different. If you have symptoms and a test is done to confirm what is wrong, that is part of diagnosing a condition you already have, and the resulting diagnosis is ordinary medical history like any other. It is the diagnosis and its treatment that become disclosable on a future application, not because it was genetic but because it is now part of your medical record.

For a test taken after your current policy started, this distinction rarely bites, because nothing later can change cover already in force. Where it matters is the Huntington's exception and any new cover: because the £500,000 threshold looks at your total life cover, a predictive Huntington's result could become relevant if you later stacked up policies that crossed that line. For everyone else, and for every other condition, the result stays outside the process.

One further distinction is worth holding onto, because it is where people trip. The gene result is protected, but the clinical care that a result leads to is not necessarily so. If a predictive result prompts you to start monitoring, take medication, or have preventive surgery, those are ordinary medical facts that a future application may ask about. It is the appointment, the prescription or the operation that becomes disclosable, not the DNA finding that prompted it — and again, only for cover you apply for afterwards, never for the policy you already hold.

If you later increase or replace the cover

The one thing that genuinely reopens the assessment is buying more cover. Taking out a new policy, or applying to increase the sum assured on an existing one, is a fresh application judged on your position at that date. You answer the questions again, and your medical history — including anything a genetic result led to clinically, such as monitoring or surgery — is assessed afresh, though the predictive result itself remains outside what can be asked.

Two practical points follow. First, if your policy includes a guaranteed insurability option — a built-in right to raise cover on set life events without new medical questions — that works differently from a fresh application, so check what your own policy allows. Second, if you know your needs will grow, it is usually simpler to arrange the right amount at the outset. When you are weighing that up you can get life insurance quotes and have an FCA-authorised broker size the cover before any of these questions arise. The related questions about what insurers may ask are gathered in our guide to family history, inherited risk and the odds.

Across the UK, and if you think a result was used

These rules are UK-wide. The Code on Genetic Testing and Insurance and the duty of reasonable care apply the same way in England, Scotland, Wales and Northern Ireland, so a test taken after your policy started is protected wherever you live. What your GP can pass on about your relatives, and the way family history is recorded, follow their own limits — set out in what your GP can actually tell a life insurer — but none of that reaches a genuine later genetic result.

If you ever believe an insurer has used a predictive result it should not have, say so in writing and ask for the decision to be reviewed under the Code. Participating insurers have a nominated underwriter responsible for genetics cases, and an unresolved complaint can be referred to the Financial Ombudsman Service. It is also worth remembering that the questions asked at application are narrower than many fear — the rules on which relatives even count are covered in how half-siblings and step-parents sit against the first-degree rule, and a research finding you took part in is handled separately again in what a genomics study participant must disclose.

Frequently asked questions

Can a genetic test after my policy started affect my cover?

No. Under the Code, insurers will not ask for or take account of a predictive genetic test result obtained after cover began. Your premium, terms and sum assured are fixed by what was disclosed at application, and a later result cannot be used to change any of them.

Could it be used to refuse a claim?

The Code's claims provisions say a predictive result taken after the policy started is not to be used when assessing a claim. What can be examined is whether the original application was answered accurately, under the Consumer Insurance (Disclosure and Representations) Act 2012, so honesty at the outset is what protects the claim.

What if I increase the cover later?

Increasing the sum assured or taking a new policy is a fresh application, assessed on the position at that date, and the £500,000 Huntington's threshold looks at your total life cover. Guaranteed insurability options inside an existing policy work differently, so check what your policy allows.