Best Biological Age Tests (2026)
Biological age tests estimate how old your body is behaving — but they do it in fundamentally different ways, and a single number from one brand is not comparable to a number from another. Most use epigenetic clocks (DNA methylation); one major player, GlycanAge, uses glycan markers of immune aging; and some, like InsideTracker, estimate age from blood biomarkers. This guide ranks the tests by method, resolution, sample type and price so you can pick the right tool for your question.
One honesty note up front: our hands-on testing is still rolling out — every test here is evaluated from published methodology, resolution, sample type and price rather than our own sign-up-to-results run (each review is marked not-yet-tested). And a health note: these are research-grade wellness tools, not FDA-cleared diagnostics, and the science of biological age is still developing — use them to track trends over time on the same test, not to diagnose anything. Prices change often; tap through to check current terms.
The picks
Best organ-system granularity — Generation Lab (SystemAge)
~$490
The most granular organ-system view in the category — SystemAge reports biological age across 19 distinct organ systems rather than one whole-body number, founded by UC Berkeley aging researcher Dr. Irina Conboy with a large B2B clinic channel behind it. Our highest score in the category (8.4/10). The trade-off is price: at ~$490 it sits at the premium end.
Best value epigenetic test — NOVOS (NOVOS Age)
$349 (free AI tool)
The best price-to-depth ratio in the blood-based epigenetic category: ~900,000 CpG sites via an at-home finger-prick, a 3rd-generation DunedinPACE clock, 11 organ ages plus telomere length, and a 55-page report — close to TruDiagnostic’s resolution at a meaningfully lower $349. A free photo-based AI age tool (ENABL Age) is the no-commitment entry point. Public Benefit Corporation ethos. 8.1/10.
Best resolution / research-grade — TruDiagnostic (TruAge)
$399–$799
The highest-resolution consumer epigenetic test on the market — ~950,000 CpG sites analyzed from a blood spot, exclusive DunedinPACE licensing, and a multi-clock approach validated with Harvard and Yale researchers. It reports multiple algorithms (DunedinPACE, GrimAge, PhenoAge) rather than a single proprietary number, which is the serious choice for longitudinal tracking. 8.0/10.
Best for reliable retesting — Elysium Health (Index)
$299
Academic pedigree (co-developed with Yale’s Morgan Levine) and a saliva collection engineered for test-retest reliability — Elysium’s APEX technique is designed to cut the run-to-run noise that makes saliva epigenetic testing hard to trend, with a clean consumer UX. A defensible lower-cost entry with a narrower algorithm scope than TruDiagnostic. 8.0/10.
Best for tracking intervention response — GlycanAge
$348–$599
The only major player measuring glycan biomarkers instead of DNA methylation — a marker of inflammatory/immune aging that responds to lifestyle changes on a faster timescale than epigenetic clocks, which makes it well-suited to checking whether an intervention is working. A physician consultation is included in every package. Because it measures something different, it complements rather than replaces an epigenetic clock. 7.8/10.
Other methods worth knowing
InsideTracker (InnerAge) estimates age from blood biomarkers plus DNA and wearable data rather than a methylation clock — the fastest results in the category (3–5 days) and the cheapest entry at $99, though it answers a different question than an epigenetic clock. myDNAge ($299) is one of the few tests built directly on Horvath’s original epigenetic clock and offers a rare urine-sample option. Tally Health ($229, David Sinclair co-founded) is the lowest single-test entry via a cheek swab. And Viome ($129–$399) is really a microbiome test that reports a biological age as a secondary output — a different tool, listed here so you know it isn’t a like-for-like epigenetic clock.
Comparison
| Test | Price | Method | Sample | Standout |
|---|---|---|---|---|
| Generation Lab (SystemAge) | ~$490 | Epigenetic — 19 organ systems | — | Most granular organ view |
| NOVOS (NOVOS Age) | $349 | Epigenetic (~900k CpG, DunedinPACE) | Finger-prick blood | Best value epigenetic |
| TruDiagnostic (TruAge) | $399–$799 | Epigenetic (~950k CpG, multi-clock) | Blood spot | Highest resolution |
| Elysium Health (Index) | $299 | Epigenetic (noise-reduced) | Saliva | Reliable retesting |
| GlycanAge | $348–$599 | Glycan (immune aging) | Finger-prick | Tracks intervention response + MD consult |
| InsideTracker (InnerAge) | from $99 | Blood biomarkers + DNA + wearable | Blood draw | Fastest results (3–5 days) |
| myDNAge (Epimorphy) | $299 | Epigenetic (Horvath original clock) | Urine or saliva | Original Horvath algorithm |
| Tally Health (TallyAge) | $229 | Epigenetic | Cheek swab | Lowest single-test entry |
| Viome (Full Body Intelligence) | $129–$399 | Microbiome + cellular (bio-age secondary) | Stool + blood + saliva | Microbiome-first — a different tool |
Frequently asked questions
What is the best biological age test in 2026?
It depends on the method you want. Generation Lab (SystemAge) scores highest in our comparison (8.4/10) for its 19-organ-system granularity; NOVOS Age is the best value in the blood-based epigenetic category at $349; TruDiagnostic offers the highest resolution (~950k CpG sites); and GlycanAge uses a different biomarker (glycans) that responds faster to lifestyle change. Note our hands-on testing is still rolling out — rankings are based on published methodology, resolution, sample type and price.
Are biological age tests accurate?
Epigenetic clocks are validated research tools, but consumer test-retest reliability varies between providers, and the science of biological age is still an active research area. The most reliable way to use these tests is to track trends over time on the same test and sample type — not to compare a single number across different brands, which use different algorithms, samples and reference populations. Treat the result as a directional health signal, not a diagnosis.
What is the difference between epigenetic and glycan biological age tests?
Epigenetic tests (TruDiagnostic, NOVOS, Elysium, myDNAge, Tally) read DNA methylation patterns to estimate a molecular age. GlycanAge instead measures glycans — sugar structures on antibodies that reflect inflammatory and immune aging, and that shift on a faster timescale, which makes glycan testing useful for checking whether an intervention is working. Blood-biomarker approaches like InsideTracker’s InnerAge estimate age from current physiology instead. They measure different things and are not directly comparable.
How much does a biological age test cost?
From about $99 (InsideTracker InnerAge, a blood-biomarker approach) to $799 (TruDiagnostic’s premium tier). Most consumer epigenetic clocks land at $229–$349 (Tally $229; Elysium and myDNAge $299; NOVOS $349). GlycanAge runs $348–$599 with a physician consult included, and Generation Lab’s organ-system panel is around $490.
How we picked: these rankings are based on published methodology, resolution (CpG sites / marker set), sample type, clinician access and price — not yet on our own sign-up-to-results testing (every review is currently not-yet-tested). We will update this guide as hands-on data lands. Biological age tests are research-grade wellness tools, not medical diagnostics. See our methodology. Links marked “Check price” are affiliate links; see our affiliate disclosure.