Biological Age Test

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Index, a revolutionary at-home test developed by Elysium Health, tracks how fast you’ve been aging using the latest generation technology in the science of epigenetics. With Index you'll receive:

  • Biological Age, a measure of the average age at which your body is expected to function
  • Cumulative Rate of Aging, the pace at which your body has aged for every year you’ve been alive
  • Science-backed lifestyle recommendations you can use to adopt healthier habits
  • Special pricing for annual or semi-annual subscribers starting at $299. Please contact our customer experience team at (888) 220-6436 or to receive your discount.

Using our algorithmic platform for epigenetic examination (APEX), Elysium calculates your biological age by examining more than 100,000 sites on your DNA where methylation has taken place—a biochemical process that does not change the inherent structure, but affects how your genes are expressed. 

We employ the custom Elysium chip, designed with biotechnology leader Illumina, to analyze your methylation patterns via a computational approach that significantly improves upon past biological clocks:

  • The most precise epigenetic biological age test
    When you take a biological age test, you want to know that the result is as precise as possible and that it was developed with you, as an individual, in mind. In building Index, we made sure that a saliva sample run more than once would return near identical results each time. With other less precise clocks, your biological age might differ by a lot—by as much as 25 years!—Index ensures very minimal variability (~1 year), both thanks to the superior technology of APEX and the extensive validation of the test performed by our science team. When compared to five other epigenetic clocks, Index provides the most precise and reliable measure of biological age.
  • Equivalent or better prediction of physical functioning status
    Index is more predictive of physical functioning status than a prior leading measure known as DNAmPhenoAge. This means biological age as measured by Index corresponds closely with measures of physical fitness and is a more accurate predictor of biological age.
  • Better ability to track lifestyle changes over time
    Want to be able to track the results of a lifestyle intervention over time on your rate of aging? You need to eliminate noise over time. Repeatability and better prediction of physical functioning status add up to a better ability to track changes.

Approximately 6 weeks after receiving your saliva sample, we’ll send an email letting you know your results are ready. Before that, a lot happens behind the scenes.

  • Week 1 to 2: Extracting DNA
    We extract your DNA and read sites across your genome where methylation, a type of epigenetic change, has occurred using a process called bisulfite conversion.
  • Week 3: Profiling Methylation
    Your DNA gets loaded onto a chip and scanned to create your methylation profiles. Quality control ensures your data is robust and complete.
  • Week 4 to 5: Calculating Biological Age

    We analyze sites of methylation across your genome to calculate your biological age.
  • Week 6+: Tracking Your Progress
Use your report results and recommendations to see if making healthy changes can impact how you age.

Do You Know How Quickly You‘ve Been Aging?

It turns out that everyone ages at a different rate. Studies have found associations between healthy living factors—like diet, exercise habits, alcohol consumption, and stressors like sleepless nights—and biological age. So how can you get real insight into how your body is actually aging?

Discover your Biological Age

Get ready to take control of your future. Using a saliva sample from you, we extract your DNA and read sites across your genome where methylation, a type of epigenetic change, has occurred. We analyze over 100,000 sites of DNA methylation to calculate your biological age.

Morgan Levine, Ph.D., of Yale University

“Index shows incredible promise when it comes to monitoring how the body is capable of functioning and there is potential for even more diverse applications in the future.“

Morgan Levine, Ph.D., of Yale University 

The Science Behind Index

Morgan Levine, Ph.D., of Yale University, spearheaded the development of our proprietary Index platform. In 2018, Levine developed a novel epigenetic biomarker analysis to assess “phenotypic age,” or what we now call biological age.

Index is powered by the Elysium chip, developed with the help of Illumina, a global leader in DNA sequencing and array-based technologies. Index uses Elysium’s next-generation technology Algorithmic Platform for Epigenetic Examination (APEX) to assess and analyze your epigenetics from a saliva sample.

See the Science

How fast have you actually been aging?

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Why Our Customers Love Index

Frequently Asked Questions

Index was developed in partnership with Yale University to provide the most precise biological age test. Harnessing the latest generation technology in the science of epigenetics, Index analyzes your epigenome to accurately determine your biological age—a measure of how quickly your body is aging. With its superior accuracy and reproducibility, Index is designed to help you better understand your personal aging process.
Index is an at-home saliva test. Saliva samples offer a convenient and non-invasive method for DNA sample collection. It is an ideal tissue to sample in terms of being reflective of an individual's epigenome at a given moment in time for measuring aging.
Index has not been reviewed or approved by the FDA as it is not a medical device. Index is not intended to screen, diagnose, treat, cure, or prevent any disease or condition or assess risk of any disease or condition. Unless advised by your healthcare professional, biological age should not be used to determine or alter any chronological age-related health or medical treatments.
Your data is protected with industry-standard encryption. We have implemented strict access controls internally, including limiting access to a select group of employees and an audit trail of any access. Personal data and de-identified test result data will be kept separately so, for example, CX associates helping a customer with an order or looking at a customer’s account will not have access to your test results without your permission.
This methodology has been examined on individuals age 0-100, but we recommend it for adults.
Basis is available in the United States and Canada. Matter, Format, and Index, are currently only available to ship and bill to addresses located in the U.S. Sign up for our newsletter to be notified of updates related to the international availability of our products.
USPS is our shipping partner for standard shipping, and a prepaid label is included with your Index kit to return your sample when it’s ready for processing. We utilize FedEx for expedited shipping, which can be purchased for an additional $25 fee.
All Elysium products can be purchased directly through our website and are not currently available in any retail stores. Basis is available for purchase to addresses that bill and ship in the United States and Canada, and Matter, Format, and Index are available for purchase in the U.S. To stay up to date on the international availability of our products, please subscribe to our newsletter.