“Longevity testing” isn’t one test — it’s a category, and the category has expanded fast enough that even people already interested in the space struggle to keep track of what’s actually worth paying for. Here’s a plain breakdown of what exists and what each type actually measures.
Biological Age Tests
The best-known category. Epigenetic clocks (like GrimAge and DunedinPACE) analyze DNA methylation patterns to estimate how fast your body is aging relative to your chronological age. These are population-validated predictors of mortality and disease risk, not individual diagnoses — useful as a trackable signal over years, not a verdict from a single reading.
Functional and Physical Tests
Cheaper and often more actionable than lab work: grip strength (one of the strongest simple predictors of healthy aging in the literature), VO2 max (cardiorespiratory fitness, a strong all-cause mortality predictor), and gait speed. These require no lab and can be tracked at home or in any gym.
Blood-Based Biomarker Panels
Inflammatory markers (hsCRP, IL-6), metabolic markers (fasting insulin, HbA1c, advanced lipid particle counts), and hormone panels. These are the backbone of most longevity medicine workups and, unlike biological age clocks, map directly onto specific, actionable interventions.
Imaging-Based Tests
Key fact: Coronary artery calcium (CAC) scoring is one of the few longevity-adjacent tests with genuinely strong evidence behind it — it directly visualizes calcified plaque in the coronary arteries and is a validated predictor of future cardiac events, unlike most biological age tests which are population-level statistical predictors rather than direct anatomical measurements.
Whole-body MRI screening has become popular in the same category, but it comes with a real caveat: professional radiology bodies, including the American College of Radiology, have publicly cautioned that there isn’t yet sufficient evidence to justify routine whole-body MRI in people without symptoms, given the real risk of false positives and overdiagnosis driving unnecessary further testing.
What’s Actually Worth Doing
For most people starting out, the highest-value, lowest-cost entry points are functional tests (grip strength, VO2 max) and a solid blood panel with inflammatory and metabolic markers — both directly actionable and well-evidenced. Biological age clocks and advanced imaging are reasonable additions once you want a more complete picture, but they’re not where to start, and none of them replace a physician’s clinical judgment.
At lifespan.asia, we break down which longevity tests have real evidence behind them and which are ahead of the science — including a deeper Singapore-specific guide on which biological age tests are worth paying for. Read that alongside this if you’re deciding where to start.