Question 1

What exactly happens when I sign up?

Accepted Answer

You'll create your account and we'll guide you through booking your first blood test at a clinic near you. From there you'll get your results and a personalised weekly plan in the app.

Question 2

How do you personalise my weekly plan to my lifestyle?

Accepted Answer

We consider your biology, daily schedule, preferences, and what realistically works in your life. No generic advice - everything is tailored to you.

Question 3

I'm really busy - will I actually have time for this?

Accepted Answer

Absolutely. Everything is designed around 5-minute actions that fit into your day. No lengthy routines or complex tracking required.

Question 4

Is this just another blood test app?

Accepted Answer

No. We don't just tell you what's wrong - we focus on simple steps to prevent problems before they start, based on what your body actually needs. We use our blood tests to track your progress every 4 months and give you feedback on how your lifestyle has affected your body.

Question 5

What if I'm not comfortable with health tech?

Accepted Answer

Everything is designed to feel like having a conversation with a friend who happens to know a lot about health. No complex interfaces or medical jargon.

Question 6

Will my health data be kept private?

Accepted Answer

Your privacy matters. We're GDPR compliant, never sell your data, and you're in control of your information. Questions? Just ask us at help@dohealth.co

Question 7

Do I need to go to a clinic?

Accepted Answer

Yes. Your blood test is done in person at a partner clinic by a trained professional, using a sample taken from a vein in your arm. This is the only way to run the full panel and get reliable results for things like insulin, cholesterol and inflammation.

Question 8

Where are the clinics?

Accepted Answer

We have 50+ clinics across the United Kingdom. You can find them here.

We're expanding our coverage to more locations - sign up and tell us where you'd like us to launch next.

Question 9

How should I prepare for my blood test?

Accepted Answer

For our blood test to be valid, you need to have fasted for 8-12 hours before your test - this means no breakfast, no snacks and no drinks containing sugar or milk. You can drink water, take your usual prescribed medicines and supplements as normal. You will get a checklist from us before your appointment in the app.

Question 10

When is the best time to do my blood test?

Accepted Answer

You can do your blood test at any time, as long as it is after 8-12 hours of fasting. Many people prefer to do this in a morning slot as that means missing only breakfast.

Question 11

How long does it take to get my results?

Accepted Answer

Results usually take 2-3 days after the day of the blood test. If your test is done before a weekend or a bank holiday then it may take slightly longer.

Question 12

Why do you test every 4 months?

Accepted Answer

Roughly every four months is long enough for meaningful changes in markers like HbA1c, triglycerides and liver enzymes, but frequent enough that you can see the impact of your habits within the same year. It also lets us track you across different seasons, rather than relying on a single snapshot.

It is your choice to wait longer than four months or not do all three tests in a given year.

Question 13

Can I get a blood test if I'm pregnant?

Accepted Answer

We support receiving blood tests while pregnant, however, it is important to note that our test ranges for females are not adjusted for normal changes that happen in the body during pregnancy. It is important to continue your routine antenatal check-ups alongside our programme. We are not a replacement for NHS care during pregnancy.

Question 14

What if I have lab results already from my doctor?

Accepted Answer

Currently, we do not support inputting your results into our programme, although this may change in the future.

Question 15

How accurate are your tests?

Accepted Answer

Our blood tests are performed by a UK partner laboratory (Randox) that is UKAS accredited to ISO 15189, the same standard used in NHS and hospital labs. That means your samples are processed under strict quality control, with validated methods for every biomarker we report.

Question 16

How many biomarkers do you test?

Accepted Answer

We test 50 biomarkers in total as part of your annual health screen. 11 of them are core biomarkers, which we retest every 4 months to track how your body is responding to the programme.

You can see everything we test on our What we measure page.

Question 17

What are core biomarkers?

Accepted Answer

Core biomarkers are 11 key markers that give an insight into your metabolic and cardiovascular health. They are influenced by our lifestyle choices (modifiable) and have strong evidence that links them to risk of potential disease (optimisable). They are tested every 4 months and give you feedback on how your body is responding to the programme.

Our 11 core biomarkers are:

- HbA1c
- Fasting Insulin
- Vitamin D
- ALT
- AST
- HDL Cholesterol
- Triglycerides
- ApoB
- hs-CRP
- Homocysteine
- Uric Acid

Question 18

What are baseline biomarkers?

Accepted Answer

Baseline biomarkers are broad health screens that are primarily there to tell you if there is something that is concerning. If that is the case, you'll receive communication from us to seek medical advice.

We recommend tracking these on an annual basis as we don't expect these to move within a 4-8 month period with lifestyle change.

You can see the full list on our What we measure page.

Question 19

Why doesn't Do Health test everything?

Accepted Answer

Because more data isn't necessarily better data. The more things you measure, the more likely it is that something looks unusual, even in a healthy person. That can lead to unnecessary worry and unnecessary investigation.

So we only include a marker if it's meaningfully linked to your health, if we can interpret the result responsibly, and if there's something useful you can do with it. We keep reviewing the evidence, and may add, remove or change biomarkers as the science evolves.

Question 20

Why measure ApoB?

Accepted Answer

ApoB is a protein found on the particles that can deposit cholesterol in your artery walls. Measuring it estimates how many of those particles you have, rather than just how much cholesterol they carry. Two people with similar LDL cholesterol can have very different particle counts.

It isn't an experimental marker - international cardiovascular guidelines recognise a role for ApoB in refining risk. We always interpret it alongside your other cardiovascular and metabolic results. Read more on our ApoB page.

Question 21

Why measure hs-CRP?

Accepted Answer

High-sensitivity C-reactive protein (hs-CRP) is a marker of inflammation. Inflammation plays a role in cardiovascular disease, so a persistently high level can add useful information about your risk.

It's also non-specific. Infections, injuries and many other temporary things can raise it, so one high result doesn't mean you have heart disease or a chronic inflammatory condition. Context, and sometimes a repeat test, matters. Read more on our hs-CRP page.

Question 22

What about HbA1c?

Accepted Answer

HbA1c shows your average blood glucose over roughly the last two to three months, and is widely used to identify and monitor diabetes and pre-diabetes.

Glucose regulation sits on a spectrum, so seeing how it changes over time is useful for understanding your metabolic health. As with every biomarker, we look at it in the wider picture rather than as a score on its own. Read more on our HbA1c page.

Question 23

Where do you get your ranges from?

Accepted Answer

Our ranges are based on UK clinical guidelines, clinical studies and our own clinical review of what is realistically modifiable and useful for prevention. For core markers we go further than simply “normal” and use tighter ranges where there is good evidence that lower or higher levels are linked to better health. It's important to note that every lab has different reference ranges for some markers. This is because of how they are tested and is particularly relevant for hormonal markers.

You can find more detail on our What we measure page.

Question 24

Why are some of my results optimal but others aren't?

Accepted Answer

Core markers are the foundation of our programme. They are there to tell you what truly matters about your health and are included by the fact that they can be modified through lifestyle and affect the risk of long term disease - this is what we call ‘optimisability’. Core markers are the only markers that can have an optimal grade.

You can find more detail on our What we measure page.

Question 25

Can a result be outside the reference range when nothing is wrong?

Accepted Answer

Yes. A reference range isn't a line between “healthy” and “unhealthy”. Healthy people sometimes fall outside it, and people inside it can still have health risks.

Results also vary with things like hydration, exercise, food, infection, medication, your menstrual cycle and the time of day. That's why we don't treat every flagged result as a diagnosis.

Question 26

Why repeat some measurements?

Accepted Answer

A single result is a snapshot. Repeating a measurement helps tell a lasting pattern from normal day-to-day variation, and shows whether a lifestyle change is making a difference.

Different biomarkers change at different speeds, so not every marker needs testing as often as the others. We keep our retesting intervals under review as the evidence evolves.

Question 27

Will my results include explanations?

Accepted Answer

Yes. Every biomarker in the app comes with a plain English description, a clear “what this means for you” and recommendations, rather than just a green or red flag. You will also have Joy in the app to answer questions and help to build your lifestyle around improving or maintaining blood markers.

Question 28

If something is abnormal, will you send me to my GP?

Accepted Answer

Not automatically. Minor or unexpected results often just need context or a repeat test, and where that's the case we'll handle it within Do Health.

If a result suggests something that needs assessment or treatment outside of what we do, we'll tell you why medical review is appropriate and how urgently you should get it. We know the NHS is under pressure, and we don't want to pass on avoidable work or uncertainty to your GP.

Question 29

How do you calculate biological age?

Accepted Answer

Your biological age is calculated by assigning each of your core biomarkers a score based on where it lies within its clinical range. This score is then multiplied by a weight, depending on the clinical relevance of a biomarker, to make a final score, which is divided by how many core biomarkers were tested. This score is compared to a population average and converted to a biological age using your date of birth as a reference point.

Question 30

What does my biological age mean?

Accepted Answer

It's a way of summarising your biomarkers by comparing them with patterns seen in population data. It can be a helpful way to see how your health compares with what's typical at different ages.

But it's an estimate, not a diagnosis, and not a prediction of how long you'll live. Its main value is motivation - the individual results and the actions that follow matter more than the number.

Question 31

How can I improve my biological age?

Accepted Answer

Improving your biological age involves targeting lifestyle changes using the programme to focus on core markers that need improvement or further optimisation. Each biomarker has its own things that help to improve it over time. Each task, where relevant, is linked to a biomarker. For more information, please tap on each biomarker you would like more details on.

Question 32

Why test your health when you feel well?

Accepted Answer

Many of the factors behind future heart and metabolic disease, like blood pressure, blood glucose and certain blood fats, can change for years before you notice any symptoms. That's the idea behind preventive healthcare, including the NHS Health Check.

We build on that principle with a broader set of measurements and support to make lasting lifestyle changes. We don't believe more testing is automatically better, that every abnormal result is disease, or that a blood test can tell you everything about your health.

Question 33

Is there evidence for testing people who feel healthy?

Accepted Answer

Yes, with an important qualification. There's good evidence that risk factors like blood pressure, glucose regulation and cholesterol are linked to future disease, and that addressing them can reduce heart attacks and strokes.

That's different from saying that running lots of blood tests on everybody improves health. Studies of indiscriminate health checks have raised real concerns about overdiagnosis and false positives. So we don't search for disease - we measure selected markers that help us understand modifiable risk, alongside your lifestyle and family history.

Question 34

Doesn't the NHS already do this?

Accepted Answer

In part, yes - and that's a good thing. The NHS Health Check assesses cardiovascular and metabolic risk for eligible adults aged 40-74 in England. If you are eligible, we recommend you do the NHS Health Check.

Do Health doesn't replace it, or your GP or any other NHS care. We combine selected biomarkers with lifestyle information, interpretation and behaviour change support, and let you track progress over time. Lifestyle and medicine work side by side: we help you build the foundations for your health day to day, while your GP or specialist focuses on diagnosis, monitoring and treatment.

Question 35

Does Do Health diagnose illness?

Accepted Answer

No. Do Health is a lifestyle and coaching programme that uses blood tests to give you a deeper insight into your health. We do not make clinical diagnoses or medication recommendations.

If you have unexplained symptoms, feel unwell or are worried you may have a medical condition, please seek medical assessment rather than relying on preventive testing.

Question 36

Does having more blood tests make me healthier?

Accepted Answer

No. A blood test is information, not treatment. What matters is whether the information is meaningful and leads to a sensible action.

Sometimes that's a change to your diet, activity, sleep or alcohol intake. Sometimes it's a repeat test. Occasionally it's a medical assessment. And sometimes the right response is to do nothing at all - good preventive medicine includes knowing when not to intervene.

Question 37

Can health testing cause harm?

Accepted Answer

Potentially, yes, and any responsible testing service should say so. Testing can lead to false reassurance, incidental findings, anxiety and sometimes unnecessary repeat tests or investigations.

That's why our job isn't just to give you numbers. It's to explain what they mean, put them in context and avoid unnecessary concern.

Question 38

Do you have scientific evidence for what you recommend?

Accepted Answer

Yes. The blood panel and the lifestyle recommendations are built on evidence based medicine, using peer reviewed research and existing guidelines, then translated into simple actions that you can actually do. We continuously review the literature and update our internal clinical documents as new high quality evidence emerges.

You can find links to the studies behind our biomarkers and ranges on our detailed biomarker pages.

Question 39

Does Do Health have proof that its programme prevents heart attacks or makes people live longer?

Accepted Answer

Not yet, and we think it's important to say that clearly. There's strong evidence linking the risk factors we measure to future disease, and that changing them improves health outcomes. That's not the same as proving our programme itself reduces heart attacks, cancer or deaths.

We intend to evaluate our programme, publish our methodology and outcomes, and contribute to the evidence on modern preventive healthcare. Science shouldn't just be how a healthcare company markets its product - it should be how the product is tested.

FAQs

About Do Health

Your blood test

What we measure

Understanding your results

The science behind Do Health

Know your body. Own your health.