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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