InsideTracker Ultimate
Blood biomarker testing + actionable AI recommendations - the original "data + advice" longevity platform.
The OG of "blood test + AI advice" - InsideTracker was doing this 10 years before Function Health existed.
InsideTracker started in 2009 as MIT-spinout science applied to athlete bloodwork. Fifteen years later it's still one of the cleanest implementations of "test biomarkers, get actionable diet/exercise/supplement recommendations" in the market.
The Ultimate plan tests 48 biomarkers (vs Function's 110+) but goes deeper on actionability: the algorithm gives you specific food, exercise, and supplement recommendations tied to your individual results, plus DNA-informed adjustments if you add the genomics layer.
Where it loses ground in 2026: Function Health's 110+ panel for $499/yr (vs InsideTracker's 48 markers for $589 single-shot) makes Function the better value for buyers who just want comprehensive labs. Where InsideTracker still wins: actionable food/exercise recommendations, DNA integration, and the cleaner UX for buyers who don't want to interpret raw labs themselves.
Buyers who want test results paired with explicit "do X" recommendations rather than raw lab data they have to interpret.
You want maximum biomarker coverage at the lowest annual cost - Function Health wins on that math.
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InsideTracker Ultimate Plan - buyer FAQ
InsideTracker vs Function Health - which one?
Function tests more biomarkers (110+ vs 48) at lower annual cost ($499/yr vs $589/single). InsideTracker gives more actionable food + exercise + supplement recommendations from your specific results, plus DNA integration ($189 add-on). If you want maximum lab data at lowest cost, Function. If you want explicit "do X, eat Y" recommendations paired with data, InsideTracker.
Is the DNA add-on worth $189?
For most users, marginal benefit. The DNA layer tweaks the recommendation algorithm based on your specific gene variants (e.g. lactose tolerance, caffeine metabolism, vitamin D conversion efficiency). The recommendations get more personalized but the directional advice is similar to what you'd get from raw labs + a knowledgeable clinician. Worth it for genomics-curious buyers; skip if you're budget-conscious.
How does InsideTracker compare to 23andMe / Ancestry health reports?
Different products. 23andMe/Ancestry analyze saliva DNA for ancestry + health predispositions (one-time, ~$199). InsideTracker analyzes blood biomarkers for current physiological state, then ties recommendations to your DNA if you add the genomics layer. They're complementary - 23andMe tells you genetic risk, InsideTracker tells you what's happening right now.
Can I use my own lab results?
InsideTracker accepts existing lab uploads from many providers (Quest, Labcorp, hospital systems) for free if you want their algorithm + recommendations on top of labs your doctor already ordered. This is a meaningful unlock for buyers who get comprehensive labs annually via their PCP - you can run InsideTracker on top of existing data without paying for new tests.
How often should I test?
Quarterly to every 6 months is the recommended cadence for tracking lifestyle interventions. Monthly is overkill (most biomarkers don't shift meaningfully in 30-day windows). Annual is too sparse to catch trends. The InsideTracker Pro membership ($99/mo) includes 2 tests/year and is the right cadence for most buyers actively iterating their protocol.