How it works

Calibre is available for adults aged 18 to 65 living in the UK, with a particular focus on 25 to 55-year-olds who are broadly well and looking for a holistic, proactive and expert-led approach to their health.

Calibre works alongside traditional healthcare and is not suitable as a first point of contact for new or urgent health concerns. Calibre is not currently suitable if you: are under 18 or over 65; are not resident in the UK; are experiencing new, worsening or urgent symptoms not yet discussed with a doctor, including mental health symptoms; are currently pregnant; or have a health condition that is unstable or not well controlled.

If unsure, contact info@getcalibre.com before signing up.

Because health is a trajectory, not a snapshot. As we learn more about you and measure what changes, your Health Assessment and plan become more precise over time.

Week 1. Build your baseline
Complete your health questionnaires, connect your wearable, upload past medical records and book your blood and urine test at a Randox clinic or at your home or office with a Heim Health nurse.

Week 2. Diagnostics
Complete your personalised blood and urine test, alongside five days of lifestyle tracking covering energy, blood pressure, nutrition, activity and sleep.

Week 3 to 4. Understand your health
Once all your information is complete, your dedicated doctor and Calibre’s Causal AI bring it together in your Health Assessment. You meet your dedicated doctor to understand what’s driving your energy and long-term health and agree on your first personalised plan.

From there
We track what changes, learn from the results, and continuously refine your plan.

Your membership starts with a personalised blood and urine lab test covering 50+ biomarkers, selected to build a meaningful baseline for your energy and long-term health.

Every six months, you and your dedicated doctor decide which diagnostic will add the most value. This may mean targeted blood-marker retesting or an advanced test such as DEXA or VO₂ max. Your full blood and urine lab test is repeated annually. This cycle continues throughout your membership.

You can choose a Randox clinic, or an at-home or office visit each time, at no extra cost.

An annual health check gives you a snapshot. Calibre is built around your trajectory. We decide what to measure, interpret it in the context of your full story, act on what matters and track what changes over time, working towards more energy today and lower long-term health risks.

Yes. Instead of visiting a Randox clinic, you can book a visit from a Heim Health nurse at your home or office, anywhere in the UK. They collect your blood and urine samples and send them to the Randox laboratory, so you get the same personalised test either way. Both options are included in your membership at no extra cost.

A wearable can tell you something’s off, but it can’t tell you why. Calibre combines wearable data with diagnostics, lifestyle and your health history to understand what it means for you and what to do about it.

No. Calibre is your primary relationship for proactive health, working alongside traditional healthcare. We help you understand what’s driving your health and how to improve it over time. When something requires specialist or urgent care, your dedicated doctor guides you to the right service.

Yes. Calibre meets UK GDPR and healthcare data-protection standards as a CQC-regulated care provider. Your health information is only accessible to you and the people involved in your care. We don’t share it with third parties without your consent, other than in exceptional circumstances where we have a legal obligation to do so.