Clock Foundation GrimAge Test Review 2026
Created by Steve Horvath (invented epigenetic clocks), GrimAge predicts mortality risk, PhenoAge...
Clock Foundation at a Glance
The original. Steve Horvath invented the Horvath clock in 2013. GrimAge is considered the gold standard in longevity research for mortality prediction.
Test Details
Testing Methodology
- MethodologyEpigenetic
- Clock/AlgorithmGrimAge, PhenoAge (Steve Horvath)
- Biomarkers MeasuredDNA methylation
- Systems TrackedMortality/morbidity prediction
- Sample TypeBlood (finger prick)
Accuracy & Features
- ValidationGold standard in research
- Actionability Score★★★★★
- Recommendations IncludedYes
- Retest DiscountNo
- Subscription Option$150/mo (Advanced Plan)
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Frequently Asked Questions
How much does Clock Foundation GrimAge Test cost?
Clock Foundation GrimAge Test costs $325 per test. There is also a subscription option:$150/mo (Advanced Plan).
What methodology does Clock Foundation use?
Clock Foundation uses Epigenetic testing with the GrimAge, PhenoAge (Steve Horvath) algorithm. This approach measures DNA methylation biomarkers and tracks Mortality/morbidity prediction.
How accurate is the Clock Foundation GrimAge Test?
Clock Foundation has been validated through Gold standard in research. The test has an actionability score of 5/5, indicating how useful the results are for guiding lifestyle interventions.
Does Clock Foundation provide recommendations?
Yes, Clock Foundation provides Yes to help you take action on your results.
What sample type is required for Clock Foundation?
Clock Foundation requires a blood (finger prick) sample, which can be collected at home and mailed to their lab for analysis.
Disclaimer
This information is for educational purposes only and is not medical advice. Biological age testing is an emerging field and results should be interpreted with appropriate skepticism. Prices are based on January 2026 data and may vary. Consult with a healthcare provider before making health decisions based on test results.