Biological Age Assessment
Your birthday says one thing. Your body may say another.
TimeXtension is our at-home biological age assessment, invented by longevity scientist Dr Edouard Debonneuil. It is completely non-invasive, with no needles and no blood draw. It looks at measures such as grip strength and body composition to estimate how your body is ageing.
How it works
Three steps, all from home
Watch the guide
The video below shows each measurement step by step. It takes just a few minutes.
Measure at home
Do simple, external measurements such as grip strength and body composition. Nothing to swallow, prick or post.
Get your biological age
See how your results compare with your age in years, and book a call with us to talk them through.
Why measure
What gets measured gets better
Track your progress
Measure again after a change in diet, training or sleep, and see whether your body agrees.
One kit, many uses
There are no refills to buy. Use it as often as you like, for the whole family.
Pairs with the N-of-1 test
TimeXtension is the measurement we use in our placebo-controlled N-of-1 test.
Questions
Is it a medical test?
No. TimeXtension is a wellbeing assessment, not a medical diagnosis. If you have health concerns, please speak to your GP.
Do I need blood or saliva samples?
No. It is fully non-invasive and external.
How do I get a kit or book an assessment?
Email customer@londevity.com and we will help you choose the best option, at home or with us in London.