Executive Health Checks: What Is Worth Testing, and What Is Not

Why "comprehensive" is not automatically better

Health screening is marketed the way phone plans are: tiers, packages, and a strong implication that the expensive one is the responsible choice.

Clinically, that is not how it works.

Every test has a threshold above which a result is called abnormal. Those thresholds are typically set so that a small percentage of perfectly healthy people fall outside them. That is unavoidable — but it has a consequence that is rarely explained:

The more tests you run on a healthy person, the more likely it becomes that at least one comes back abnormal by chance alone.

Run a very large panel on a well person and an "abnormal" result somewhere is close to expected. Each one then generates a decision: repeat it, investigate it, scan something, refer somewhere. Most resolve as nothing. Along the way they cost time, money, and a period of genuine worry.

This is the argument against over-testing — not cost, but the cascade.

What a genuinely useful health check includes

The unglamorous parts do most of the work.

A proper history. What you actually do, how you sleep, how much you move, what you drink, what stress you are under, and — importantly — what runs in your family. Family history changes which tests are worth doing more than almost anything else.

Blood pressure, measured properly. One of the most valuable numbers in medicine, cheap, and frequently glossed over.

Body composition, not just weight. Weight alone tells you little. The distribution of that weight — particularly around the abdomen — tells you considerably more about metabolic risk.

Core blood markers chosen for you. Typically metabolic and cardiovascular markers, plus anything your history justifies. In this region, vitamin D and metabolic markers are commonly relevant.

Age- and sex-appropriate screening, following established guidance rather than a package tier.

Time to discuss the results. A results printout with numbers flagged red and no explanation is not a health check. It is a source of anxiety.

What is usually not worth adding by default

These can be entirely appropriate when there is a reason — a symptom, a risk factor, a family history. As routine additions for an asymptomatic person, they are harder to justify:

• Whole-body scans in people with no symptoms, which very reliably find incidental findings requiring follow-up that almost never changes anything
• Very broad tumour marker panels in people at ordinary risk, which are poor screening tools and produce substantial false alarms
• Extensive micronutrient panels beyond those with a plausible reason
• Repeating a normal test annually when guidance does not support that interval

The question to ask about any proposed test is simple and clarifying: "If this comes back abnormal, what would we do differently?" If there is no clear answer, the test is probably not earning its place.

How to read your results

Three things that make results far less frightening:

A flagged value is not a diagnosis. Reference ranges are statistical, not moral. Being slightly outside one is common and frequently meaningless.

Trends beat snapshots. A single value is a photograph. Three values over three years is a story, and the story is what matters.

Context changes interpretation. The same number can be reassuring in one person and worth investigating in another. That judgement is the part you are actually paying for.

What happens after the check

This is where most screening packages quietly end, and where the value should actually begin.

A useful assessment should leave you with:

• A clear statement of what was found and what it means, in language you can repeat to someone else
• A small number of specific, achievable actions rather than a generic instruction to eat better and exercise more
• A sense of what to monitor and when, so that you are not repeating everything annually by reflex
• A clear escalation path if something does need following up

If you leave with a folder and no plan, the check has not done its job.

For organisations

Corporate health assessments face the same tension. It is easy to buy a package that looks impressive and changes nothing.

Programmes that actually shift outcomes tend to share features: they focus on a small number of modifiable risks, they identify the people who would benefit from individual follow-up, and they are repeated on a sensible interval rather than annually by default. We work with organisations on this.

The IDUNN view

Our position is the same here as everywhere else on this site: the most intensive option is not automatically the best one.

A well-chosen assessment, properly explained, changes behaviour and occasionally catches something important. An exhaustive one, handed over as a document, mostly generates follow-up appointments.

Every test we recommend should have a reason. If we cannot explain the reason, we should not be doing the test.

What to do before your appointment

A small amount of preparation changes how much value you get out of the visit.

• Find out your family history. Which relatives, which conditions, and at what age. This single piece of information influences which tests are worth doing more than almost anything else, and most people arrive without it.
• List your current medications and supplements, with doses. Supplements are frequently omitted and can affect results.
• Note your actual habits honestly — sleep hours, alcohol, smoking, activity, caffeine. The assessment is only as good as the information it works from.
• Write down what is actually worrying you. Most people have a specific concern behind booking a general check. Naming it usually produces a more useful appointment than a standard panel would.
• Check fasting requirements in advance if bloods are planned.
• Bring previous results if you have them. A single value is a photograph; a series is a story.

What the results conversation should cover

This is the part that determines whether the check was worth doing.

You should come away able to answer:

• What was tested, and why those things?
• What was normal, and what was not?
• For anything abnormal — is it likely to matter, and how do we find out?
• What should I change, specifically?
• What should be repeated, and when?
• What would make me contact you sooner?

If the discussion is a list of numbers rather than answers to those questions, ask for the answers. You are entitled to them, and they are the actual product.

Screening versus diagnosis

A distinction worth holding, because conflating the two causes most of the confusion around health checks.

Screening looks for problems in people without symptoms. It is a numbers exercise: it accepts some false alarms in exchange for catching some genuine problems earlier. It is appropriate for a small number of conditions where earlier detection reliably improves outcomes.

Diagnosis investigates a symptom or an abnormal finding. It is targeted, and the threshold for testing is quite different.

Most health-check marketing blurs this, offering diagnostic-intensity testing as though it were screening. Understanding the difference is what lets you ask the right question about any proposed test: is there evidence that finding this early, in someone like me, leads to a better outcome?

For the great majority of tests being sold in comprehensive packages, the honest answer is that nobody has shown that it does.

Questions worth asking about any package

If you are comparing health-check packages, these questions separate a considered assessment from an impressive-looking list.

• Who decides which tests I have — me, a price tier, or a clinician who has spoken to me? The answer to this is the single biggest quality signal.
• How long is the results consultation, and who conducts it? A results discussion with the clinician who ordered the tests is a different product from a printout emailed to you.
• What happens if something is abnormal? Is follow-up included, and is there a clear pathway, or does an incidental finding become your problem to chase?
• Which of these tests are recommended by established screening guidance for someone of my age and risk, and which are additions? A clinic that can answer this comfortably is one worth using.
• Will you tell me if a test is not worth doing? The willingness to remove things from a package is more reassuring than the willingness to add them.

What we would do at IDUNN

We would start with a conversation, not a price list.

That conversation establishes what you are actually concerned about, what your history and family history contain, and what is realistic to change. The tests follow from that, and we would expect to explain the reason for each one.

Afterwards, you should leave with an explanation you could repeat to someone else, a small number of specific actions, and a clear sense of what to monitor and when. If a finding needs following up, we say what the pathway is rather than handing you a flagged number.

That is a smaller product than a comprehensive package. We think it is a more useful one.