Most Life Policies Never Reach the Genetic Testing Threshold

The short version, before you spend another evening worrying about it: for a life insurance policy the size most people buy, the genetic testing limit does not apply to you at all. That limit only comes into play above £500,000 of life cover, and even then only for one named condition. If the policy you are looking at is a mortgage-sized amount, or a few years of your income, you are almost certainly below the line where an insurer could ever ask about a genetic result.

This matters because the genetic testing question is usually discussed as though the exception were the rule. It is the other way round. The default is that predictive genetic results are kept off life insurance applications entirely. The exception is narrow, sits above a high financial threshold, and applies to a single disease. For most applicants it simply never arises, and knowing that is worth more than another article about the exception itself.

So the useful question is not "what does the genetic testing rule say" but "does it reach a policy the size of mine". For most readers the honest answer is no, and the rest of this page shows you why, and what actually shapes your application instead.

The threshold, precisely

Under the Code on Genetic Testing and Insurance, insurers agree not to ask for or take into account the result of a predictive genetic test. There is one exception. An insurer may ask about a predictive result only for Huntington's disease, and only where the total life cover applied for is more than £500,000. Below £500,000, even a Huntington's result cannot be requested. No other condition is on the approved list at any figure.

Source: HM Government and the Association of British Insurers, Code on Genetic Testing and Insurance, and its 2025 three-year review, published on gov.uk under the Open Government Licence.

Read that carefully, because every word narrows it. The result must be predictive rather than diagnostic. The condition must be the one named condition. The cover must be above the threshold. And you must actually have such a result. Remove any one of those and there is nothing for an insurer to ask about.

The Code also covers critical illness cover and income protection, each with its own separate financial limit that is lower than the one for life insurance. But there is an important point that applies to those products: no condition is currently approved for use with them at all. So a predictive genetic result cannot be asked for on a critical illness or income protection application whatever the amount, and the single Huntington's exception applies only to life cover above the £500,000 line. In other words, the one narrow door that exists is narrower still than the threshold alone suggests.

What a policy "the size of the one you are buying" usually means

Most life cover is bought for one of two reasons: to clear a mortgage if the borrower dies, or to leave a family enough to live on for a stretch of years. Mortgage-linked cover is sized to the loan. Family protection is often sized to a multiple of income or to the years until children are independent. For the majority of households, both of those land below £500,000.

Some policies do exceed it — a large mortgage in an expensive area, a high earner replacing many years of income, or several policies that add up. Even then, two things hold. The threshold only opens the door for Huntington's disease and nothing else, and it only opens it for that one predictive result. Every other genetic result stays off the application regardless of the sum assured. So even a reader buying well above £500,000 is, for all practical purposes, in the same position as everyone else unless the specific issue is a predictive Huntington's result.

When can insurers actually use a genetic test result?

It helps to state the gate as a checklist, because all of it has to be true at once. An insurer can take a predictive genetic result into account only where the result is for Huntington's disease, and the result already exists, and the total life cover applied for is above £500,000, and the result is genuinely predictive rather than a diagnosis of a condition you already have. Miss any one of those and the result cannot be used.

Everything outside that gate is protected. A predictive result for an inherited cancer risk, for a cardiac condition, for a dementia-related variant on a consumer DNA report — none of these can be asked for or used, at any level of cover. That is the general rule, and it is why the family-history questions people meet on a form are about relatives' illnesses, not about your own gene tests. If you want the fuller picture of how the whole system fits together, our guide to family history, inherited risk and the odds maps it out.

How often this actually happens

If the exception were catching large numbers of ordinary applicants, you would expect a steady stream of disputes about it. That is not what the evidence shows. The 2025 three-year review of the Code reported only a small number of complaints and cases arising under it — the pattern you would expect if most policies sit below the financial thresholds and the single named condition is rare in the first place.

The takeaway is not that the rule is unimportant. It matters a great deal in principle, and it is what stops predictive testing from becoming a barrier to cover. The takeaway is that, in practice, it is rarely triggered, and that an ordinary applicant buying an ordinary policy is very unlikely to encounter the exception at all. Weighing a genetic test against a future application, as some readers do before testing, is usually solving a problem that will not occur — a point we make directly for one condition in not skipping a Lynch test to protect your insurance.

It is worth understanding why the threshold sits where it does, because it is not arbitrary. The high figure is a deliberate balance. It lets insurers guard against the narrow scenario where someone with a known, serious predictive result deliberately buys a very large policy — the thing insurers call anti-selection — while leaving every ordinary policy untouched. Set the threshold low and the protection would be hollow; set it where it is, at £500,000 and one disease, and the vast majority of applicants keep the full protection while the extreme edge case is covered. That design is exactly why, for a normal-sized policy, the rule reads in your favour by default.

Where the rule came from, and why people are confused

Some of the confusion is historical. For years the arrangement was a "concordat and moratorium" that was periodically renewed and always looked temporary, which left people unsure whether protection might lapse. In 2018 that was replaced by the open-ended Code, giving the protection a more permanent footing with regular reviews. If you have read older guidance that talks about a moratorium with an expiry date, it has been overtaken — we explain the change in what replaced the genetic testing moratorium in 2018.

The other source of confusion is imported American advice, where life insurers can, in places, use genetic results, and "buy cover before you test" is common counsel. It does not apply here, and taking it at face value leads UK readers to worry about a rule that mostly does not reach them.

So what does actually affect your application?

If the genetic testing exception is unlikely to touch you, it is fair to ask what does. The honest list is unglamorous and entirely answerable: your age, whether you smoke or vape, your height and weight, your own medical history, and your family history of certain conditions. Family history questions are permitted at any level of cover, so those you will be asked — how a raised risk from relatives is handled is the real substance of an application, as with two generations of breast cancer on one side of the family.

Family history questions are usually specific and answerable: which close relatives had a condition, how old they were when it was diagnosed, and whether more than one was affected. Two first-degree relatives affected young is weighted differently from one affected in old age, and how each insurer weights it varies, which is precisely why comparing matters. Note the difference from the genetic rule here: an insurer may ask what your mother or brother was diagnosed with, but it cannot ask for a predictive gene test that would tell it whether you inherited the same risk. The family tree is fair game; your own genome is not.

Ordinary health and lifestyle facts move an application far more than any genetics question. Whether a recently prescribed treatment counts, for instance, is the kind of thing readers actually ask about — see whether weight loss injections affect life insurance. And if your income is structured in an unusual way, that can shape how much cover an insurer will offer in the first place, which we look at in low salary, high dividends and whether that limits your cover. When you are ready to see real numbers against your own circumstances, you can get life insurance quotes and let an FCA-authorised broker work through the questions with you.

Scotland, Wales and Northern Ireland

The Code on Genetic Testing and Insurance is a UK-wide agreement, so the £500,000 threshold and the Huntington's exception apply the same way across all four nations. There is no separate, lower threshold in one part of the UK, and nothing about living in Scotland or Wales changes whether the exception can reach your policy — the answer is the same figure and the same single condition wherever you apply from.

What does differ is the machinery around medical evidence. In Northern Ireland, an insurer's access to a report from your doctor runs under a separate legal regime from the one used in Great Britain, which changes some of your rights around seeing and correcting a report rather than the genetic rule itself. We set that out in why Northern Ireland uses the 1991 Order, not AMRA. It does not change the answer on genetic results, but it is the kind of nation-specific detail worth knowing if you are applying there.

Frequently asked questions

Does the genetic testing rule apply to my policy?

Probably not in any practical sense. A predictive genetic result can only be asked for where the condition is Huntington's disease and total life cover exceeds £500,000. Most UK life policies are written well below that figure, so the exception never arises at all, and no other condition is on the approved list at any level of cover.

How many people does the exception affect?

Very few. The 2025 three-year review of the Code reported only a small number of complaints and cases arising under it, which is consistent with most policies sitting below the financial thresholds. The rule matters in principle, and it is rarely triggered in practice.

So what does actually affect my application?

Your age, smoking status, height and weight, your own medical history, and the conditions your relatives had, since family history questions are permitted at any level of cover. Those are the answers that shape the terms you are offered, not a genetic test result.