The company that turns a drop of your blood into a to-do list - blood, DNA, and your smartwatch, read as one plan for aging slower.
The mark. A drop of blood, drawn as an eye. The whole thesis of a fifteen-year-old company compressed into one symbol: look inside, then do something about it.
Here is a fact that is both obvious and slightly annoying: your body is aging, and your annual physical mostly doesn't tell you what to do about it. You get a page of numbers, most of them labeled "normal," and a doctor who has eleven minutes. InsideTracker's entire pitch is that "normal" is the wrong benchmark, and that the useful question is narrower - what's optimal for you, specifically, given your blood, your genes, and how you slept last week.
InsideTracker is the consumer brand of Segterra, Inc., a Cambridge, Massachusetts company founded in 2009 by Dr. Gil Blander, a scientist with a PhD in biology from the Weizmann Institute of Science and a postdoc from MIT. The company traces its origin to a formative childhood experience that pointed Blander toward a career-length question about how long a person can live, and how well. That is a grand question. The product is a very concrete answer to it.
The concrete part works like this. You order a test. Depending on the plan, a phlebotomist draws blood or a kit arrives for an at-home sample, and the sample goes to a certified lab. A few weeks later you get a report: up to 48 biomarkers - glucose, cholesterol fractions, inflammation markers like C-reactive protein, hormones, liver and kidney function - each scored against a personalized optimal zone rather than a generic reference range. So far this is a nicer-looking blood test.
The recommendation layer is the product
The part that makes it a company rather than a lab report is what comes next. InsideTracker attaches recommendations to the numbers: eat these foods, consider these supplements, change these habits, and here is roughly how much each should move which marker. That translation - from measurement to a next action - is the unglamorous, valuable middle of health tech, and it is the part most dashboards skip. Numbers without a next step are just anxiety with a subscription.
Layered on top is InnerAge, a biological-age score. InsideTracker runs about 20 blood markers through a proprietary algorithm and returns a single number meant to represent how fast you are aging versus the date on your birth certificate. If your InnerAge is lower, the message is reassuring; if higher, the message is a slightly uncomfortable conversation with your metabolism. The point of the number is not the number. It is that, unlike your chronological age, this one is presented as something you can move.
Then there is the data fusion. InsideTracker adds a DNA kit - up to 261 gene variants across wellness traits - and pulls in wearable data from Garmin, Fitbit, Oura, and Apple: resting heart rate, sleep duration, sleep quality. Blood tells you where you are, DNA hints at predisposition, the wearable tells you what you did yesterday. Combining three separate data streams into one recommendation engine is genuinely hard, and it's the thing InsideTracker has been quietly building for over a decade.
"With this integration, we believe InsideTracker has unlocked the gold standard of health analytics to give our users a true inside view of wellness."
— Dr. Gil Blander, Founder & Chief Scientific OfficerNone of this is cheap, and InsideTracker doesn't pretend otherwise. There's an annual membership around $149, an Ultimate blood test that runs into the several hundreds, a DNA kit around $249, and InnerAge as an add-on. That price point sorts the customer base neatly: endurance and strength athletes optimizing recovery, longevity-focused people running what amounts to a personal experiment, and the quantified-self crowd who were always going to buy this. Reviewers - Forbes, Digital Trends, GearJunkie - tend to land in the same place: expensive, sleek, science-forward, and unusually good if performance or longevity is the thing you actually care about.
The business is evolving in two directions at once. On the consumer side, 2025 brought Terra, an AI health coach, and Nutrition DeepDive, a food-and-supplement tracker keyed to your own biology. The interesting thing about Terra isn't that it's an AI - everyone has an AI now - it's that fifteen years of blood, DNA, and biomarker science is the training data underneath it. On the B2B side, InsideTracker has begun licensing its personalization platform to wellness brands and gyms, including a partnership with FITNESS SF covering more than 35,000 members and staff, and a 2025 tie-up with Ultrahuman that brought its Blood Vision testing to the US for the first time.
What InsideTracker is really selling, underneath the biomarkers and the algorithms, is a reframe. People don't buy blood tests. They buy a slightly better-informed version of themselves - one that knows which of its numbers to argue with, and has a list.
Up to 48 blood biomarkers covering metabolism, inflammation, hormones, and organ function - each scored against a personalized optimal zone with food, supplement, and lifestyle guidance.
Twenty blood markers run through a proprietary algorithm to estimate how fast your body is aging versus your chronological age - and what to do to nudge it down.
At-home analysis of up to 261 gene variants across wellness traits, combined with blood data for deeper, predisposition-aware personalization.
Pulls resting heart rate, sleep, and activity from Garmin, Fitbit, Oura, and Apple Health to keep recommendations current with what you actually did.
A conversational AI health coach that interprets your blood, DNA, and fitness data and surfaces personalized guidance on demand.
A food and supplement tracker that analyzes your nutrition in the context of your blood, DNA, and wearable data.
| Round | Amount | Date | Lead / Investors |
|---|---|---|---|
| Series B | $15.0M | Sep 2022 | PeakBridge (lead), Cornucopian Capital, OurCrowd, BASF Venture Capital |
| Total to date | $18.1M | 2022 | Combined disclosed funding |
Revenue is estimated at ~$5M annually (third-party estimate; not company-confirmed). Valuation not disclosed.
Dr. Gil Blander and co-founders launch the company in the Boston area to make personalized blood analysis accessible.
The platform builds a following among endurance and strength athletes for performance and recovery tracking.
Biological-age scoring and genetic analysis join the blood-based recommendation engine.
InsideTracker begins fusing Garmin, Fitbit, Oura, and Apple data with blood and DNA insights.
PeakBridge leads a round to scale the AI personalization platform and science team.
Personalized analytics reach 35,000+ gym members and staff.
Launches an AI health coach and partners with Ultrahuman to bring Blood Vision testing to the US.
Brought Ultrahuman's Blood Vision testing platform to the US for the first time, focused on cardiovascular health.
Integrated analytics, blood tests, and DNA analysis for 35,000+ gym members, trainers, and staff.
Feeds Garmin resting heart rate and sleep data into blood- and DNA-based recommendations.