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Biological Age Testing
Your DNA methylation clock reveals your true age
$250–$5003–5 weeks3 ordering options
What Gabriel reads for
Biological age via DNA methylation patterns
Pace of aging (how fast you're currently aging)
Immune age and immune system function
Cost
$250–$500
Turnaround
3–5 weeks
Ordering path
TruDiagnostic (TruAge)
Results flow
Upload + interpret in Gabriel
What this test reveals
What this test reveals
Epigenetic clock testing analyzes DNA methylation patterns across your genome to calculate your biological age — how old your cells actually are, regardless of your chronological birthday.
Your biological age can be years younger or older than your calendar age, and it's one of the strongest predictors of healthspan, disease risk, and longevity. Unlike genetic testing that shows fixed risk factors, biological age is modifiable — giving you a trackable metric to measure whether your health interventions are actually working.
People usually reach for this kind of diagnostic when they want a clearer read on biological age via dna methylation patterns, pace of aging (how fast you're currently aging), immune age and immune system function, especially when symptoms or prior testing still leave blind spots.
Once results are back, you can upload them into Gabriel to connect the findings to symptoms, protocols, and next-step testing instead of leaving them as a static report.
Commonly relevant for: Anti Aging Longevity, Brain Health Neurodegeneration, Heart Disease Prevention.
Gabriel difference
Why this becomes more useful inside Gabriel
Biological age is the single most important longevity metric. Two 50-year-olds can have biological ages of 38 and 62 — with radically different disease trajectories. Gabriel uses your biological age as the north star metric: every protocol we recommend should be moving this number in the right direction. Retest every 6–12 months to track real progress.
Gabriel interprets results through a functional, root-cause lens: optimal ranges, pattern recognition across multiple diagnostics, and what the findings actually mean for action rather than just classification.
That means this test can feed directly into protocols, practitioner matching, food strategy, and follow-up testing instead of ending as a one-off PDF or lab portal result.
What to expect
What to expect from ordering to results
01
Order
Order directly through TruDiagnostic (TruAge) or ask Gabriel whether there is a better path first.
02
Complete
A simple blood draw or saliva collection kit mailed to your home. The sample is analyzed for DNA methylation patterns at hundreds of thousands of sites across your genome.
03
Interpret
Upload the results to Gabriel for pattern recognition, protocol suggestions, and next-step guidance.
Frequently asked questions
Questions people usually ask before ordering
Chronological age is how many years you've been alive. Biological age measures how old your cells actually are based on DNA methylation patterns, a molecular process that changes with aging. A 45-year-old with a biological age of 38 is aging slower than average. A 45-year-old with a biological age of 52 is aging faster.
The most validated method uses epigenetic clocks that analyze DNA methylation at specific sites in your genome. You provide a blood or saliva sample, and algorithms (like the Horvath clock or GrimAge) compare your methylation patterns against reference databases to calculate your biological age.
The best epigenetic clocks have a median error of about 3-4 years. GrimAge has emerged as the strongest predictor of morbidity and mortality. While not perfect, these tests are significantly more predictive of health outcomes than chronological age alone.
Research suggests yes, to a degree. Studies have shown biological age reductions of 1-3 years through interventions like caloric restriction, exercise, improved sleep, stress reduction, and specific supplements. The key is testing, intervening, and retesting to measure your personal response.
Home test kits range from $200-500 depending on the provider and depth of analysis. Companies like TruAge, myDNAge, and Elysium offer direct-to-consumer testing. Clinical-grade testing through a practitioner may include deeper analysis and interpretation.
Every 6-12 months gives you meaningful data on whether your interventions are working. Testing more frequently than every 6 months is unlikely to show statistically significant changes. Most people test annually as part of their preventive health routine.
Not sure which test belongs in your workup?
Tell Gabriel your symptoms, goals, and what you have already tried. You will get a more useful answer than a generic test catalog can give you.