Your Epigenetics Are Modifiable

Measure How You're Aging. Then Change It.

GrimAge and other leading epigenetic clocks reveal your true biological age — and unlike your genes, your epigenetics respond to what you do next. We give you the science to act on it.

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Free Tools to Help You Get Started
IRB-Ready
At-Home Testing
Private & Secure
GrimAge Systems Aging

800+ peer-reviewed citations

-6 yrs
Bio 42 · Chrono 48
Vascular
+0.2y
Cellular
+0.1y
ECM
0.0y
Lung
-0.2y
Kidney
-0.3y
Muscle
-0.5y
Immune
-1.0y
Brain
-4.3y

Lu et al. 2019 · Aging · doi:10.18632/aging.101684

Already Have Results?
Bring Your Existing Data

Tested with another provider? Upload your prior epigenetic results or blood panel data and start tracking from day one.

Drop PDF or lab reports

GrimAge, PhenoAge, blood panels

my_grimage_results.pdf

GrimAge report imported

quest_blood_panel.pdf

PhenoAge calculated from labs

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Research Hub
Discover Treatments & Compare the Evidence

Biological age reduction by intervention

GLP-1 RA
-2.2 yrs
Exercise
-1.8 yrs
Metformin
-1.3 yrs
Caloric Restr.
-0.9 yrs
RCT 🧑

Semaglutide reduces PhenoAge acceleration

Wainberg et al. 2025 · JAMA Netw Open

RCT 🧑

Caloric restriction slows DunedinPACE

Waziry et al. 2023 · Nature Aging

Pre 🐭

Metformin extends lifespan 5.8%

Martin-Montalvo et al. 2013 · Nature Comms

Who It's For

Whether you're optimizing your own health or managing patients, we have you covered

Know Your Biological Age — Then Know What to Do About It

  • Discover how your lifestyle is actually affecting your aging at the molecular level
  • Get evidence-backed guidance on what to change — not generic health advice
  • Track whether your interventions are working with repeat testing
  • Analyze your supplement protocol against published research
Explore Testing

The Most Rigorous Longevity Tests, Built for Clinical Use

  • GrimAge and validated epigenetic clocks with full patient management
  • Clinical trial and research cohort support with kit logistics
  • Longitudinal tracking to measure intervention effectiveness over time
  • Growing Research Hub with curated evidence on longevity treatments
See Clinical Features

Simple At-Home Testing

Get your results in 3 easy steps

1

Order Your Kit

Choose from our selection of epigenetic tests. Your kit arrives with everything you need for an easy at-home sample collection.

2

Collect & Ship

Follow the simple instructions to collect your sample. Use the prepaid shipping label to send it back for analysis.

3

Get Your Results

Receive your detailed biological age report online within 2-3 weeks. Track changes over time with repeat testing.

50+

Clinical Partners

15,000+

Tests Performed

100+

Research Studies

1-2 yrs

Test Precision

Backed by World-Class Aging Science

Testing from the Clock Foundation is used widely by leading research institutions worldwide.

Research partners including Harvard, UCLA, Stanford, Yale, Duke, and many more

From Measurement to Action

Every tool answers the same question: what does the science say, and what should I do about it?

Protocol Analyzer

Upload your supplement protocol and get an evidence report on each ingredient's longevity research.

Claims Validator

Paste a URL from any health product page and we'll fact-check the claims against published research.

Blood Test Analysis

Upload your lab results and get personalized interpretations focused on longevity-relevant biomarkers.

Upload Results

Personal Studies

Design and track your own N-of-1 experiments to measure the impact of interventions on your health.

Learn More

Longevity Lingo

Learn the language of longevity science with our fun, plain-English glossary of key terms and concepts.

Play Now

Research Hub

Browse curated evidence on longevity treatments, biomarkers, and outcomes from peer-reviewed research.

Explore Research

Recent Media Coverage & Interviews

Our research featured in leading publications worldwide

National Geographic: Can aging be cured? Scientists are giving it a try
The Guardian: Why startups are racing to measure your biological age
Financial Times: The race to reverse ageing
Bloomberg: Anti-Aging Science Could Extend Human Life Expectancy
Quanta Magazine: Epigenetic 'Clocks' Predict Animals' True Biological Age

Frequently Asked Questions

Have more questions? Contact our support team anytime.

Contact Support
What is biological age?
Biological age reflects how old your body actually is at a cellular level, based on biomarkers like DNA methylation patterns. Unlike chronological age (years since birth), biological age can be influenced by lifestyle, environment, and genetics. Two people of the same chronological age can have very different biological ages.
What types of tests do you offer?
We offer epigenetic biological age tests including GrimAge, PhenoAge, and DunedinPACE. These tests analyze DNA methylation patterns to determine your biological age and identify specific health risk factors. We also support uploading and analyzing traditional blood panel results.
How is the test performed?
Our at-home collection kit uses a simple finger-prick blood sample. The kit includes everything you need with easy-to-follow instructions. Once collected, you ship it back using the included prepaid label for DNA methylation analysis.
Can I reduce my biological age?
Yes! Research shows that lifestyle factors like diet, exercise, sleep, and stress management can significantly impact biological age. Many of our customers have seen their biological age decrease after implementing healthy lifestyle changes. Regular testing helps you track your progress.
Do you work with clinics and researchers?
Yes! We provide group management, bulk kit ordering, participant tracking, and automated notifications for clinical trials and longevity practices. Contact us for institutional pricing and API access.

Your Epigenetics Are Modifiable. Start Here.

Whether you're testing for the first time or analyzing your protocol, we connect the science to your next step.

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