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Quick answer: In the InsideTracker vs Function Health debate, InsideTracker is built for athletes who want fitness-focused biomarkers tied to performance and wearables, while Function Health is the more clinically thorough full-body membership at $365 per year for 160+ biomarkers across two draws. But if your goal is a complete annual baseline you can actually act on without overpaying, Superpower is the pick we recommend: $199 per year for 100+ biomarkers, 17 plain-language health scores, a personalized action plan and an AI concierge. Choose InsideTracker for athletic optimization, Function Health for maximum marker depth, and Superpower for the best whole-body value.
Disclosure: Vital Signs Today may earn a commission if you buy through links on this page, at no extra cost to you. This does not influence our evidence-based assessments. We are not a medical provider; talk to a clinician before acting on test results.
| Service | Best for | Pricing | Visit |
|---|---|---|---|
| Superpower | Whole-body optimization | ~$179/yr membership | View › |
| Function Health | Annual deep panel | Annual membership | View › |
InsideTracker vs Function Health vs Superpower at a glance
| Feature | InsideTracker | Function Health | Superpower |
|---|---|---|---|
| Price | $189–$589 per plan | $365/yr | $199/yr ($399 NY & NJ) |
| Biomarkers | ~13 (Essentials) to ~54 (Ultimate) | 160+ | 100+ (~150 with ratios) |
| Draws per year | Per plan; ~$149/yr cuts retest cost | 2 draws + urinalysis | 1 annual draw |
| Standout | Tiered plans, retest discounts | 6-month retest, clinician-reviewed | 17 health scores + action plan + AI concierge |
| Best for | Athletes who retest often | Most clinically thorough | Best-value full-body baseline |
InsideTracker vs Function Health vs Superpower at a Glance
All three are direct-to-consumer blood testing services, but they were built for different people. The fastest way to choose is to match the product to your actual goal, not to the longest marker list.
InsideTracker leans toward performance. Function Health leans toward clinical depth. Superpower leans toward a clear, affordable yearly baseline that a normal person can read and use. That framing matters more than any single number, because the most expensive panel is the one whose results you never act on.
InsideTracker: built for athletes and optimizers
InsideTracker’s positioning has always centered on athletic and longevity optimization. It pairs blood biomarkers with inputs like DNA and fitness-tracker data, then generates food, supplement and lifestyle recommendations aimed at performance and recovery. For a serious runner, lifter or biohacker who wants markers framed around training, that angle is genuinely useful.
The tradeoff is scope and pricing structure. InsideTracker is sold as tiered plans rather than one flat membership, and prices vary by panel, so check the provider for current pricing before you buy. It is excellent at the optimization story, but it is not trying to be the broadest whole-body screen on the market.
Function Health: the clinically thorough option
Function Health is the deepest of the three on raw marker count. The membership runs $365 per year and covers 160+ biomarkers, with two draws per year plus a urinalysis and a 6-month retest built in. That cadence is its real strength: you get a baseline, then a structured recheck a few months later, which is how you actually catch a trend.
It is also the priciest of the everyday options here, and its AI chat layer is newer. If you want the most clinically exhaustive picture and you do not mind paying for it, Function Health earns its place. For many people, though, the extra markers are not markers they will ever discuss with a clinician.
Superpower: the full-body baseline most people should start with
Superpower is a $199 per year membership that includes one comprehensive annual blood draw covering 100+ biomarkers (about 150 once you count calculated ratios). What sets it apart is the layer on top of the numbers: 17 plain-language health scores, a personalized action plan, and an AI concierge you can actually chat with about your own results.
In New York and New Jersey the price is $399 due to state lab rules, so factor that in if you live there. It is worth being clear that Superpower is a screening and tracking service, not a diagnostic clinic. But for the core job most readers want, getting a broad, readable annual baseline at a fair price, it is the most sensible entry point of the three.
Markers, Clinician Review and Retest Cadence
On marker depth, Function Health leads with 160+, Superpower follows with 100+ (roughly 150 counting ratios), and InsideTracker is narrower but more performance-targeted. Raw count is the headline number, yet it is the least useful one in isolation. Twenty markers you understand beat 160 you never open.
Retest cadence is where the real difference lives. Function Health bakes in two draws and a 6-month retest, which is ideal if you are actively chasing a number down. Superpower runs on one comprehensive annual draw, which fits the once-a-year baseline habit most people can realistically keep. InsideTracker’s retesting depends on the plan you choose.
All three deliver results through a dashboard rather than a doctor’s visit, so none of them replaces your physician. Any result outside the normal range should be reviewed with a licensed clinician before you make changes. These tools tell you what to ask about; they do not diagnose.
Cost and Cost Per Insight
Here is the honest math. Superpower is $199 per year for 100+ biomarkers, which is the lowest everyday price of the three for a comprehensive panel. Function Health is $365 per year for 160+ biomarkers across two draws, so you pay more but get a second look built in. InsideTracker is plan-dependent, so a precise yearly figure depends on the tier you select.
If you divide price by markers, Superpower delivers the most coverage per dollar. If you divide price by clinical thoroughness and retests, Function Health makes a stronger case. The wrong way to decide is to chase the biggest number; the right way is to ask which service you will still be using a year from now.
For most people researching insidetracker vs function health and landing here because they are not actually elite athletes, the answer is the one that is broad, readable and affordable enough to repeat annually.
Full-body lab membership: 100+ biomarkers, doctor-reviewed, tracked over time.
Who Each One Is Really For
Pick InsideTracker if you are an athlete or serious optimizer who wants biomarkers interpreted through a training-and-performance lens, with wearable and DNA inputs feeding the recommendations.
Pick Function Health if you want maximum clinical depth, a higher marker count, and a built-in 6-month retest, and the $365 per year price does not bother you.
Pick Superpower if you want the best all-around value: a broad 100+ biomarker baseline, 17 health scores written in plain English, an action plan and an AI concierge, all for $199 per year. For the majority of health-conscious adults who want one clear yearly read on their body, this is the recommended choice, and the reason is simple: it is the panel you are most likely to read, understand and actually repeat.
Related reading on Vital Signs Today
- InsideTracker Alternatives: 5 Options Worth Comparing (2026)
- InsideTracker Review (2026): Good for Athletes, but Worth It?
- InsideTracker Cost and Plans: A Real Price Breakdown (2026)
- Superpower Blood Test Review (2026): Is It Worth the Membership?
Frequently Asked Questions
InsideTracker vs Function Health: which is better?
It depends on your goal. InsideTracker is better for athletes who want performance-focused biomarkers tied to training and wearables. Function Health is better for clinical depth, with 160+ biomarkers, two draws and a 6-month retest for $365 per year. If you want a broad, affordable annual baseline instead, Superpower at $199 per year is the value pick.
Is InsideTracker worth it compared to a full-body membership?
InsideTracker is worth it if performance optimization is your priority and you value its food, supplement and lifestyle recommendations. If you mainly want a complete yearly snapshot of your health, a full-body membership like Superpower (100+ biomarkers, 17 health scores, $199 per year) usually gives more general coverage for the money.
How many biomarkers do InsideTracker, Function Health and Superpower test?
Function Health covers 160+ biomarkers, Superpower covers 100+ (about 150 counting calculated ratios), and InsideTracker is narrower and plan-dependent, focused on performance-relevant markers. For current InsideTracker panel details and pricing, check the provider directly.
Which one should I choose if I just want one clear yearly checkup?
For a single, readable annual baseline, Superpower is the easiest to recommend. You get one comprehensive draw, 100+ biomarkers, plain-language health scores and a personalized action plan for $199 per year ($399 in New York and New Jersey). Just remember it is a screening and tracking service, so review any abnormal result with a clinician.
