Short answer — for most people wanting a single, longevity-focused lab membership I recommend InsideTracker (Ultimate plan) as the best starting point. It combines the widest set of validated blood biomarkers, an “biological age”/aging-focused scoring approach, personalized actionable recommendations, and retest scheduling. Why InsideTracker (primary pick) Broad panel of clinically validated blood biomarkers relevant to longevity (glucose/HbA1c, lipids, CRP, vitamin D, hormones, IGF‑1, etc.). Aging/“InnerAge” analytics to track biological age over time. Personalized nutrition, lifestyle and supplement recommendations tied to your labs. Built-in retest reminders and clear progress tracking. Good alternatives depending on your focus Levels (best for metabolic/longevity work focused on glucose): subscription CGM + app that helps you optimize diet, sleep and exercise to improve glucose variability — strong evidence that metabolic control matters for aging. NutriSense (similar to Levels): CGM membership with coaching options; good if you want more hand-holding. Chronomics or Elysium Index (epigenetic aging clocks): if your priority is tracking DNA methylation–based biological age, these services offer repeatable epigenetic tests and trend tracking. Viome (microbiome + host RNA): if gut health and personalized diet/substitution suggestions are a top priority for your longevity plan. Life Extension / direct lab access (if you want physician-guided labs and prescription options): good for ordering specialty tests (hormones, advanced lipids, micronutrients) with clinician support. AnyLabTestNow / DirectLabs / Personalabs (budget option for ad hoc repeat labs): lets you buy individual lab panels/ordering if you don’t want a subscription. A practical longevity “stack” Core: InsideTracker (comprehensive blood biomarker membership and re-testing). Metabolism: add Levels or NutriSense (CGM membership) for real-time metabolic optimization. Aging clock: test annually with Chronomics/Elysium to track methylation age. Gut: test with Viome if you want microbiome-directed diet/supplement guidance. What to check before you buy Biomarkers included (are the markers you care about covered? e.g., IGF‑1, CRP, sex hormones, HbA1c, lipids). Retest cadence, price of follow-up tests and membership cost. Actionability: are recommendations personalized and evidence-based? Access to clinicians or coaches if you want interpretation and treatment guidance. Ability to export your raw data for use in other tools. If you tell me your budget, whether you’re in the US (or elsewhere), and which aspects of longevity you care most about (metabolism, hormones, biological age, gut), I can give a tailored recommendation and exact plan.
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