Biological Age Test Options and Prices

A biological age test estimates how your body compares with age-related patterns in a reference population. A biological age blood test uses either routine clinical chemistry or molecular markers such as DNA methylation. Blood-chemistry tests are useful when you want an estimate from labs you may already have. An epigenetic age test can report biological age, pace of aging, or both. Start with the free blood-chemistry estimate if you have recent labs. Choose an at-home kit, such as NOVOS Age at $349,⁷ when you want a pace-of-aging number to track, and have a physician read either result.

Two Families of Biological Age Test

Biological age is an estimate of how your body is aging compared with your chronological age. Chronological age measures time since birth. Biological age models use blood chemistry, molecular markers, or other biological data to estimate age-related changes.

The two main families use different inputs:

• Blood-chemistry estimates combine chronological age with routine clinical biomarkers.
• DNA-methylation clocks measure chemical marks attached to DNA and compare the pattern with age-related reference data.

These families do not produce interchangeable results. One may estimate the age associated with mortality risk, while another measures the pace of biological change. You need to understand the output before treating the number as a baseline. A one-off score can distract from the biomarkers and health factors that produced it. Use the score to identify the next question for your physician.

A commercial biological age test may also use another method. GlycanAge, for example, measures immunoglobulin G glycans.

Biological Age Blood Test Results From Routine Labs

A blood-chemistry biological age test can turn routine laboratory results into a single age estimate. Phenotypic Age, also called PhenoAge, combines chronological age with nine clinical chemistry biomarkers.

Those biomarkers are albumin, creatinine, glucose, C-reactive protein, lymphocyte percentage, mean cell volume, red cell distribution width, alkaline phosphatase, and white blood cell count.^1,2 Several appear on common blood panels, so you may already have much of the required data.

Phenotypic Age represents the expected age within a population that corresponds to a person’s estimated mortality risk.¹ It does not measure the speed at which you are aging today. It gives you an age-equivalent estimate based on your chronological age and blood chemistry.

Liu et al. evaluated Phenotypic Age in 11,432 adults aged 20 to 84 years, along with 185 adults aged 85 and older.¹ After adjustment for chronological age and sex, higher Phenotypic Age was associated with all-cause mortality and most of the cause-specific mortality outcomes studied.¹

The study lacked longitudinal Phenotypic Age data, so it did not show that lowering the calculated number improves health outcomes.¹ Use the estimate as one part of your health record. Your physician should read the underlying biomarkers and their trend before deciding whether any result calls for action. Normal and optimal are different questions when you read the underlying labs. A reference range can help flag disease, while a physician uses the full pattern and your symptoms to judge whether your health is functioning at its best.

You can calculate this estimate with the free biological age calculator if you have the required laboratory results. Start there if you want a baseline from bloodwork you already have.

Epigenetic Age Test Results From DNA Methylation

An epigenetic age test examines DNA methylation, which refers to chemical marks attached to DNA. These patterns change with age and can be used to build different kinds of aging clocks.

DNA methylation PhenoAge, or DNAm PhenoAge, applies an epigenetic model to the biological patterns associated with phenotypic aging. Levine et al. developed the biomarker from whole-blood data and reported that it correlated with age across the tissues and cells tested.²

DunedinPACE measures pace of aging rather than an age-equivalent number. Belsky et al. built it using the Dunedin Study birth cohort. The model tracked within-person decline across 19 indicators of organ-system integrity at four time points over two decades.³

DunedinPACE showed high test-retest reliability and was associated with morbidity, disability, and mortality in the study populations.³ The study also reported effect sizes similar to those from the GrimAge clock.³ These findings support DunedinPACE as a research measure of aging pace, but they do not establish that a change in your commercial test result causes a change in health outcomes.

Vendor clocks may combine established research clocks with proprietary models. Reports differ: NOVOS Age lists biological age, pace of aging, organ ages and telomere length,⁷ while TruAge combines OMICmAge, DunedinPACE and SYMPHONYAge.⁴ Pick the report that answers the question you plan to discuss with your physician.

Named Biological Age Tests Compared

The best biological age test depends on the output you want, the sample you prefer, and whether you already have recent bloodwork. No head-to-head study compares the accuracy of these four commercial tests.

Your decision becomes simpler when you start with the question you want answered. Choose PhenoAge when you want a blood-based estimate from existing laboratory data. Choose a test that includes DunedinPACE when you specifically want a pace-of-aging result. Your physician can then interpret the number alongside your symptoms, medical history, and other biomarkers.

At-Home Kits and Laboratory Blood Draws

A biological age test at home can use a finger stick, finger prick, or cheek swab. TruDiagnostic describes a finger-stick collection that takes approximately three minutes.⁴ Tally Health uses a cheek swab.⁵ GlycanAge and NOVOS use finger-prick collection kits that you return for analysis.^6,7

The collection method affects convenience and the biological material being measured. A cheek swab collects cells from inside your mouth, while a finger-prick or finger-stick kit collects a small blood sample. A PhenoAge estimate uses results from a standard laboratory blood draw.

Many commercial tests use home collection, so you do not need a nearby clinic to take one. If you already have the required clinical labs, the free calculator may give you a useful first estimate without another sample.

Convenience should follow the output you need. A painless cheek swab does not answer the same question as a chemistry-based PhenoAge calculation or a blood test that includes DunedinPACE. Choose the output first, then the collection method.

The Right Test for Each Goal

A blood-chemistry estimate is the practical choice when your goal is to establish a baseline from existing labs. It lets you see how several routine biomarkers combine into one age-equivalent estimate. Your physician can also inspect each underlying marker instead of relying on the final age alone.

An epigenetic test may fit better when you want a DNA-methylation age or pace-of-aging result. If you plan to repeat the test after a lifestyle or treatment change, select a report that includes the output you intend to track. TruDiagnostic describes DunedinPACE as able to track aging speed and the impact of lifestyle changes.⁴

A multi-output test may suit you if you want biological age and pace of aging in one report. More outputs can also create more numbers that require interpretation. Before paying for a kit, decide which result could change a conversation with your physician.

You may need neither test yet if you have unexplained fatigue, disrupted sleep, changes in libido, or difficulty managing body composition without recent clinical labs. Those symptoms can involve hormones, glucose regulation, inflammation, thyroid function, nutritional status, and sleep. A broad medical evaluation gives your physician more actionable information than an isolated age estimate. A standard kit gives every buyer the same collection and report. A medical plan should come from your own biomarkers, symptoms, and goals.

There is no supported accuracy winner among TruAge, TallyAge, GlycanAge, and NOVOS Age. Pick the test by the output you want and the sample you are willing to collect. Then have a physician read the result as part of your wider health pattern.

Biological Age Test Trends and Retesting

A single biological age result gives you a baseline. Repeating the same test can show whether its output moved, but the movement needs context.

Blood chemistry can change for several reasons. A physician should review the underlying values, collection conditions, current medications, and health history before interpreting a new PhenoAge result. The calculated age may move because one or more inputs changed, which makes the individual biomarkers more informative than the headline number alone. One changed input is a data point. Changes across related biomarkers form a pattern that your physician can compare over time.

The same principle applies to a DNA-methylation report. DunedinPACE showed high test-retest reliability in Belsky et al., which supports repeat measurement as a research tool.³ That finding does not provide an accuracy figure for every commercial product that incorporates the clock.

Try to use the same test when tracking a trend. Different clocks can use different biological inputs and produce different outputs. Your physician can compare like with like and decide whether the change fits the rest of your data.

The Opt Take on Biological Age Testing

A physician should read your biological age result against a panel of 55+ biomarkers, your symptoms, and your goals. At Opt Health, that review leads to a personalized plan based on your full health pattern. Full blood panels and physician consultations repeat every three to four months, and your physician adjusts the plan based on what the numbers did.

The panel spans hormones, inflammation, cardiovascular risk, and other areas of your health. This gives your physician more context than a biological age score alone. Your existing conditions and current medications are also reviewed during the initial consultation.

A home kit produces a report from one collection. The membership creates continuity through repeat testing, physician consultations, and ongoing adjustments. Each reassessment lets your physician compare the biological age output with your broader biomarker pattern. The score becomes one data point inside a measured plan.

Get started: Begin with Opt Health, where a physician reads your labs, builds your plan, and adjusts it over the loop.

Frequently Asked Questions

This content is for informational purposes and does not replace evaluation, diagnosis, or treatment by a qualified medical professional.