Key takeaway:
How do Function Health and InsideTracker compare?
Ask which of these two memberships tells you how old your body reads on paper, and the answer is not symmetrical. Function Health includes a Biological Age test in the membership and runs it twice a year, so the number is part of what you already paid for. InsideTracker calls its version InnerAge and sells it as an add-on to the Ultimate test.
Scale and price differ alongside it. Function Health publishes 160+ lab tests annually for $365 a year. InsideTracker's Ultimate panel covers up to 54 biomarkers and is sold at $489 for membership plus one test, with the membership renewing at $149 a year after that.
So the two memberships buy different things: a wide annual sweep with an aging metric folded into the price, or a tighter panel built around recommendations, with the aging metric bought separately.
Does biological age come with Function Health's or InsideTracker's membership?
Function Health puts biological age inside the price. Its biomarker page lists the Biological Age test as included, tested twice a year and derived from Phenotypic Age. Two readings a year arrive without a second purchase decision.
InsideTracker keeps it optional. Its Ultimate store page invites you to add on InnerAge to discover your biological age, which puts the figure outside the panel you bought.
That shapes how the number behaves over time. A metric included by default gets tracked whether or not you remember to opt in, and Function Health's twice-yearly cadence gives you two points on the line each year. An add-on is a choice you make again at every test, so with InsideTracker the aging number is worth planning for rather than assuming.
How many biomarkers does each membership test, Function Health's or InsideTracker's, in 2026?
Function Health publishes the larger headline figure, 160+ lab tests each year, and counts them as lab tests rather than health metrics. InsideTracker's Ultimate blood test covers up to 54 biomarkers.
Companies assemble those counts on different bases, so which markers appear on each list tells you more than which total is larger. The two lists reflect two intentions: a wide net designed to surface things nobody was looking for, and a focused set chosen because the software can turn each marker into something to eat, take, or do.
Where does the blood draw happen for Function Health and InsideTracker, and how often?
Function Health builds two draws into the year. It runs testing twice a year and on-demand, either at home or at 2,000+ lab locations.
InsideTracker starts at the lab. Its Ultimate page prices a mobile at-home draw at an extra $119 for anyone who would rather not travel, and testing more often is bought in bundles: $761 for two tests, $1,305 for four.
If you want a rhythm set for you, Function Health's two scheduled draws already are one. If you would rather test when something changes, a training block, a new routine, a symptom you are chasing, InsideTracker's bundles let you place the draws yourself.
Who translates your results, Function Health or InsideTracker?
Both turn the panel into something to act on, and they differ in what does the translating.
- Function Health: returns results explained by physicians and researchers, with a personalized protocol built from them and member chat for questions about a marker — working the protocol afterward is your call.
- InsideTracker: turns results into action via nutrition, supplement, exercise and lifestyle recommendations, plus Terra, an AI health guide.
How fast do Function Health's and InsideTracker's results come back?
Function Health says a first batch of results starts arriving within 48 hours of testing, with the rest following as each assay completes. InsideTracker publishes results within 7 business days.
For a panel you run once or twice a year, either window is short enough that it will not drive the decision. It matters more when you are testing around something specific and want to move quickly on what comes back.
What are the official 2026 membership prices for Function Health and InsideTracker?
Function Health is $365 a year, marketed as about a dollar a day, charged annually, with the first-year membership prepaid for its 160+ lab tests.
| Function Health | InsideTracker | |
|---|---|---|
| Membership renewal (after first year) | — | $149 a year |
| Additional Ultimate test alone | — | $340 for members |
Test 150+ biomarkers
Two draws a year. Get a full picture of your health and the action plan you need to improve it.
Test 150+ biomarkers
Two draws a year. Get a full picture of your health and the action plan you need to improve it.
Who is Function Health best for, and who is InsideTracker best for?
Function Health is best for:
- People who want the widest annual sweep, at 160+ lab tests for $365 a year, with a Biological Age test run twice a year inside that price.
- People who are comfortable reading their own results with interpretation from physicians and researchers, and already have a physician for anything clinical.
InsideTracker is best for:
- People who want blood work translated into specific nutrition, supplement, exercise, and lifestyle recommendations, with an AI health guide to ask.
- People who test around training or a particular goal, and want to buy repeat tests in bundles at $761 for two or $1,305 for four.
The bottom line: does Function Health or InsideTracker fit you?
Choose on what you want the membership to hand back. Function Health is the broader annual sweep: 160+ lab tests for $365 a year, a Biological Age test included and run twice a year, first results starting within 48 hours, explained by physicians and researchers. InsideTracker is the narrower and more directive one: up to 54 biomarkers at $489 for membership plus one Ultimate test, results within 7 business days, turned into nutrition, supplement, exercise, and lifestyle recommendations, with InnerAge added on if you want the aging number too.
Superpower: supplements and prescriptions inside the same $349
Both memberships end at the results screen, in different ways: Function Health's $365 a year ends with 160+ lab tests explained and a personalized protocol to run, and InsideTracker's $489 ends with a set of recommendations and an AI guide, with the aging number included only if you added InnerAge. Either way, the supplements, the changes and anything clinical are yours to source. Superpower is $349 a year, flat and all-in, and spends it on the part that comes after: 150+ health metrics across two draws, a personalized action plan written from them, and, inside the same membership, a supplement marketplace with member-exclusive pricing and prescriptions through that marketplace when clinically appropriate, priced separately. A 24/7 care team you message rather than book stands behind the plan. 93% of members rated their Superpower Health Action Plan as more useful or even life-changing than their yearly checkup, which is easier to say of a plan whose next step sits inside the product you already paid for.
A recommendation you have to go and source yourself is a task, not a plan. Start your health journey with Superpower and let the follow-through come with it.
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