Reviewed by Georgina Waugh
Clinical Nutritionist | BHSc Nutritional Medicine
Reviewed: 18 August 2026Biological age testing compared: TruAge, telomere testing and blood-marker tests.
Not all biological age tests measure the same thing. Some analyse DNA methylation patterns, some measure telomere length, and some estimate an age score from standard blood markers. This guide explains how the main types differ, what each can and cannot tell you, and how to choose the option that matches the question you are actually trying to answer.
How do you test biological age in Australia?
In Australia, biological age is most commonly assessed in one of three ways: an epigenetic test that analyses DNA methylation patterns from a blood sample, a telomere length test that measures one focused cellular ageing marker, or a calculated score based on standard blood markers. They differ significantly in depth, method and cost, and the right choice depends on how much detail you want and what you plan to do with the result.
Analyses methylation patterns across the genome from a blood sample. Reports typically include biological age, pace of ageing and system-level ageing patterns. TruAge is the epigenetic test offered through Wellbeing George.
Measures the length of telomeres, the protective caps at the ends of chromosomes, as a single cellular ageing marker. Simpler and lower cost than a full epigenetic report.
Estimate an age score from standard blood markers or questionnaire answers. Inexpensive or free, but they are calculated estimates rather than direct measurements of ageing-related biology.
TruAge or the Telomere Length Test?
Wellbeing George offers both. They are different tools for different questions: TruAge is a broad epigenetic ageing report, while the Telomere Length Test is a focused single-marker option. Neither diagnoses disease, and both are most useful when interpreted alongside your health history, lifestyle and bloodwork.
TruAge Biological Age Test
from $895 AUD
DNA methylation patterns, reported as OMICmAge biological age, DunedinPACE™ pace of ageing, SYMPHONYAge organ-system ageing, DNAm telomere length, plus immune, inflammation and lifestyle impact insights.
At-home blood spot collection, analysed by TruDiagnostic's laboratory.
People who want a detailed longevity baseline across multiple ageing markers, and plan to retest after meaningful lifestyle changes.
More detail than someone needs if they only want a single focused marker, and it does not replace bloodwork or medical assessment.
Telomere Length Test
from $310 AUD
Telomere length, the protective caps at the ends of chromosomes, as a single cellular ageing marker with biological age context.
EDTA blood sample, with results available after laboratory processing.
People who want one measurable ageing-related marker at a lower price point, without a full epigenetic ageing profile.
It does not provide pace of ageing, organ-system ageing or the broader epigenetic insights included in TruAge.
Why sample type and methodology are worth checking before you buy.
Biological age tests on the market vary widely in method, and the differences matter more than the marketing suggests. A few things worth checking on any test you consider:
- Blood versus saliva: blood is the standard tissue used in ageing research, and blood-based methylation data is generally considered more stable than saliva, which can be affected by factors such as smoking.
- Direct measurement versus calculation: epigenetic and telomere tests measure ageing-related biology in a laboratory. Calculator-style scores estimate an age from standard markers, which is useful context but a different kind of result.
- Depth of reporting: a single biological age number is a starting point. Pace-of-ageing and system-level reporting can show more about where change may be worth focusing.
- Retesting comparability: if you plan to track change over time, the same test, from the same laboratory, gives the most comparable results.
- Interpretation: any biological age result is most useful reviewed alongside symptoms, health history, lifestyle and bloodwork, rather than read as a verdict on its own.
How much does a biological age test cost in Australia?
Prices in Australia range widely because the underlying methods differ. As a general guide:
- Free to around $100: online calculators and blood-marker age scores. Estimates rather than laboratory measurements of ageing biology.
- $310 at Wellbeing George: the Telomere Length Test, a focused laboratory-measured cellular ageing marker.
- From $895 at Wellbeing George: the TruAge epigenetic test. The price reflects the laboratory methodology: the kit ships internationally and the sample is analysed at TruDiagnostic's US laboratory across biological age, pace of ageing and organ-system reporting. $1,095 includes a 60-minute consultation with a Clinical Nutritionist to interpret the full report.
- Above this: some clinics package epigenetic testing inside broader in-person health programs at higher price points.
A simple way to decide which test fits your question.
A useful longevity testing pathway is not about ordering the most advanced report first. It is about choosing the test that matches the question you are trying to answer.
- Choose TruAge if: you want a comprehensive longevity baseline including biological age, pace of ageing and organ-system patterns, and you plan to retest after lifestyle changes.
- Choose the Telomere Length Test if: you want one focused, laboratory-measured cellular ageing marker at a lower price point.
- Consider bloodwork or NutriSTAT first if: your main question is nutrient status, thyroid, iron, B12, metabolic markers or standard pathology.
- Speak to your GP first if: you have new, severe or unexplained symptoms that need medical assessment. Biological age testing is not the tool for that job.
- Unsure? A free 15-minute call can help you choose the most useful starting point and avoid testing without a plan.
Choose the right biological age test after a quick conversation.
A short call can help you decide whether TruAge, the Telomere Length Test, bloodwork review or a nutrition consultation makes more sense as your starting point. You do not need to have it all worked out first.
Biological age testing FAQs
How do you test biological age in Australia?
The main options are an epigenetic (DNA methylation) test such as TruAge, a telomere length test, or a calculated age score based on standard blood markers. Epigenetic and telomere tests are completed with at-home sample collection and analysed in a laboratory; calculator-style scores estimate an age from existing markers or questionnaire answers.
How much does a biological age test cost in Australia?
Costs range from free online calculators to laboratory testing. At Wellbeing George, the Telomere Length Test is $310 and the TruAge epigenetic test starts at $895, or $1,095 including a 60-minute consultation with a Clinical Nutritionist. The difference in price reflects the difference in method and depth of reporting.
Is there a free online biological age test?
Yes, free calculators exist. They estimate an age score from questionnaire answers or standard blood markers, which can be interesting context. They are a different kind of result from laboratory testing, which directly measures ageing-related biology such as DNA methylation patterns or telomere length.
What is the difference between TruAge and the Telomere Length Test?
TruAge is a broad epigenetic ageing report including biological age, pace of ageing, DNAm telomere length and organ-system ageing patterns. The Telomere Length Test is a focused option that measures telomere length as a single cellular ageing marker at a lower price point.
Are blood-marker biological age scores the same as epigenetic tests?
No. Blood-marker scores calculate an estimated age from standard pathology results. Epigenetic tests measure DNA methylation patterns directly in a laboratory. Both can be useful, but they answer different questions with different levels of depth.
Do biological age tests diagnose disease?
No. Biological age testing through Wellbeing George is used for wellness, healthy ageing and educational insights. It is not designed to diagnose, treat, cure or prevent disease, and it does not replace GP care, pathology testing or specialist assessment.
Should I order a test or book a consultation first?
If you already know which test matches your goal, you can order it directly. If you are weighing up TruAge, telomere testing, bloodwork review or a consultation, a free 15-minute call can help you choose the most useful starting point.
Biological age results should be interpreted carefully.
Wellbeing George provides nutrition, lifestyle and functional testing support. Biological age testing is not a substitute for medical advice, diagnosis or treatment. Results should be interpreted alongside your symptoms, health history, bloodwork, medications, current supplements and lifestyle. Please work with your GP or specialist for medical concerns. Read our full disclaimer.