Function Health Competitors: The Best Alternatives Compared (2026)

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Quick answer: The strongest Function Health competitors in 2026 are Superpower, Everlywell, and SiPhox Health, and each wins on a different axis. For most people who want a once-a-year, full-body blood baseline without paying clinic prices, Superpower is the best value: $199 per year covers 100+ biomarkers, 17 plain-language health scores, and an AI concierge. Function Health is more clinically thorough at $365, Everlywell is the pick for one or two targeted markers, and SiPhox is built for finger-prick convenience. Match the tool to your goal and you will not overpay.

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.

Why people start hunting for Function Health competitors

Function Health put whole-body lab testing on the map, and that is exactly why so many people end up searching for a Function Health competitor. The platform is genuinely good, but at $365 per year it is not the cheapest door into the category, and it is built around a heavier two-draws-per-year cadence that not everyone needs.

The honest framing: this is not about finding a Function Health competitor that beats it on every line. It is about matching the service to your actual goal. Want a simple annual baseline you can track over time? Want maximum clinical depth? Want to check one specific marker this week? Those are three different products. Below we compare the field so you can pick on purpose, not on hype.

The Function Health competitors landscape at a glance

There are dozens of testing brands now, but for a buyer comparing against Function Health, four names do most of the work. Here is the plain-English version of where each one lands.

Superpower: best overall value and the one we recommend

Superpower is a membership that costs $199 per year and includes one comprehensive annual blood draw covering 100+ biomarkers (about 150 once you count calculated ratios). You get 17 plain-language health scores, a personalized action plan, and an AI concierge you can actually chat with about your results. In New York and New Jersey the price is $399 because of state lab rules.

The reason it tops this list of Function Health competitors is simple: it delivers a comparable full-body picture for roughly half the annual cost, and it translates the numbers into something a non-doctor can act on. It is a screening and tracking service, not a diagnostic clinic, so think of it as your yearly health dashboard rather than a replacement for care.

Function Health: the most clinically thorough, at a higher price

Function Health runs $365 per year and tests 160+ biomarkers, with two draws per year plus a urinalysis and a 6-month retest. That cadence is its real differentiator: you get a second look built into the membership, which is appealing if you are actively changing something and want to confirm it moved. Its AI chat layer is newer than some rivals but improving.

If your priority is sheer marker count and a clinician-grade depth of panel, Function Health earns its price. The trade-off is cost and a heavier commitment than a once-a-year user needs.

Everlywell: best for one or two targeted markers

Everlywell is a different shape entirely. It sells at-home, single-marker test kits at per-kit pricing, processed through CLIA-certified labs with results delivered online. You are not buying a 150-marker baseline here; you are buying a thyroid panel, or a vitamin D check, or a specific hormone test, one at a time.

That makes Everlywell the smart pick when you already know what you want to look at and a full membership would be overkill. It is less a Function Health competitor and more a complement: use it to spot-check a single number between annual baselines.

SiPhox Health: best for finger-prick convenience

SiPhox Health offers at-home blood testing with a finger-prick option and longevity-focused panels. If the venous blood draw is the thing stopping you, SiPhox removes that friction by letting you collect a sample yourself. Its panels lean toward the longevity and optimization crowd. The convenience is real; just weigh the breadth of any given panel against what an in-person draw captures.

InsideTracker: best for algorithm-driven optimization

InsideTracker sits closest to Function Health on ambition but takes a different route. It leans on an algorithm that turns your blood, and optionally DNA and fitness-tracker data, into ranked recommendations for food, supplements, and habits. If you are the type who wants the service to not just show the number but tell you what to do about it in priority order, this is the shape that fits. The trade is that the optimization framing is aimed at people already deep into self-quantification, and the depth of any given plan depends on which tier you buy.

Against Function Health, InsideTracker is less about maximum marker count and more about the recommendation engine on top. It is a genuine competitor for the optimizer, and a poor fit for someone who just wants a plain annual snapshot.

LetsGetChecked: best for at-home kits with a clinical hand-off

LetsGetChecked is in the same family as Everlywell: at-home collection kits processed through certified labs, with a catalog that ranges from single markers to broader wellness panels. Its distinguishing feature is a stronger clinical follow-up on certain results, including nurse outreach for specific out-of-range findings. If the idea of a flagged result with no human to call worries you, that hand-off is worth something.

As a Function Health competitor it is really a middle option: broader than a single Everlywell kit, lighter than a full membership, and best when you want a defined panel with a bit more support than a pure self-serve kit gives you.

Function Health competitor pricing: what you actually pay

Pricing is where the Function Health vs alternatives question gets decided for most buyers, so here are the verified numbers side by side. Superpower is $199 per year ($399 in NY and NJ). Function Health is $365 per year. Everlywell is per-kit, so your cost depends entirely on which test you buy and how many. SiPhox prices by panel; check the provider for current pricing before you commit.

The takeaway: if you want the widest annual panel for the lowest predictable yearly cost, Superpower is the value leader. If you only need a single marker, a one-off Everlywell kit will almost always be cheaper than any membership. Anything in between is a judgment call about how much depth you truly use.

How do the Function Health competitors compare, axis by axis?

A list of brands does not tell you much until you line them up on the dimensions that actually decide the purchase. Here is the head-to-head on the four axes that matter most, so you can see who wins where rather than trusting a single overall verdict.

Breadth of panel

On raw marker count, Function Health leads at 160+, with Superpower close behind at 100+ (about 150 counting calculated ratios). InsideTracker and the kit services sit lower by design, because they are built around focused panels rather than a full-body sweep. If your whole reason for testing is to see everything at once, this axis favors Function Health first and Superpower a close second, and the single-kit services are simply playing a different game.

Interpretation and next steps

Breadth without interpretation is where most testers get stuck, staring at a wall of slightly-off values. This is the axis where Superpower is strongest, because the 17 plain-language scores and an action plan are the product, not an afterthought. InsideTracker also competes hard here with its ranked recommendations. Function hands you more data and a clinician-reviewed summary, but you still do more of the sense-making yourself. If you are not a clinician, weight this axis heavily.

Draw method and convenience

Function and Superpower use a venous blood draw, which is the gold standard for breadth and accuracy. SiPhox and the kit services win on convenience with finger-prick or self-collection, removing the appointment entirely. The honest trade is that a finger-prick sample supports a narrower set of markers reliably than a full venous draw, so convenience and breadth pull against each other. Pick your priority rather than assuming you can max both.

Price predictability

Memberships give you a fixed annual number: Superpower at $199 ($399 in NY and NJ), Function at $365. Kit services and panel providers are pay-as-you-go, which is cheaper for one question and can quietly exceed a membership if you keep ordering. Predictability itself has value. If you know you test regularly, a flat annual fee stops the piecemeal spend from creeping up on you.

Read across these four axes and the pattern is clear. No single service wins every row, which is exactly why matching to your goal beats chasing an overall champion. Function tops breadth, Superpower tops interpretation-per-dollar, the kit services top convenience for a single question, and InsideTracker tops hands-on optimization.

How to choose the right Function Health competitor for you

Skip the spec-sheet paralysis and answer three questions.

First, what is the job? A broad annual baseline points you to Superpower or Function Health. A single targeted marker points you to Everlywell. Second, how much depth do you actually act on? Most people do not change behavior off 160 markers; they act on a dozen. The 17 plain-language scores in Superpower exist precisely because raw marker dumps overwhelm people. Third, what is your budget tolerance? At $199 versus $365, Superpower leaves real money on the table for the same yearly-checkup job, while Function Health buys you a second draw and a higher marker count if you genuinely need them.

The pattern across these services is consistent: score-based tools win on clarity and a ready-made action plan, while single kits win when you only have one question to answer. Choose the shape that fits your question.

When a single-kit option fits better

If you are not ready for a full membership and just want to check one thing, an at-home single-marker kit is the honest answer, not a yearly plan you will underuse.

Which competitor fits a few real buyers?

Abstract comparisons only go so far, so here are three concrete situations and the honest pick for each.

The once-a-year baseliner. A 38-year-old who feels fine and wants a yearly full-body checkpoint to catch anything drifting. They will not act on 160 lines, but they will act on a clear dashboard. Superpower is the fit: broad enough to matter, interpreted enough to use, and $166 cheaper than Function for the job they actually have.

The active manager. Someone working with their doctor to move cholesterol and fasting glucose, who wants to change something and confirm it worked in a few months. The built-in second draw and 6-month retest make Function Health worth its higher price here, because the feedback loop is the entire point.

The single-question tester. A person who suspects a thyroid issue and wants one clean answer, not a membership. An Everlywell or LetsGetChecked kit is the right call, cheaper than any yearly plan and pointed straight at the one marker that is bothering them.

The optimizer. An athlete or biohacker who does not just want numbers, they want the service to rank what to change first, food, supplement, or habit, and to fold in training data. InsideTracker is built for exactly this mindset, and it will feel like overkill to the baseliner and just right to the person who already tracks sleep, HRV, and macros.

Notice that none of these buyers is wrong and none needs the same product. The mistake is not picking the weaker service, it is buying the wrong shape for your question and then feeling you over- or under-bought.

Where does Function Health still beat the alternatives?

It would be dishonest to line up competitors and pretend the incumbent has no edge. Function Health leads on a few things that genuinely matter to the right buyer, and those are the cases where paying more is the smart call.

The built-in second draw. No other service on this list bundles two draws and a 6-month retest into the base membership. For anyone actively changing a metric and wanting to confirm the change, that cadence is a real feature, not a spec-sheet number. Superpower’s annual model is not built for a mid-year recheck in the same way.

The urinalysis cross-check. The bundled urinalysis adds a kidney and metabolic read that a blood-only panel misses, which is a small but legitimate breadth advantage.

Raw marker depth for the data-hungry. If you are the person who genuinely wants every line and will read them against each other yourself, 160+ markers is more raw material than any alternative here gives you at a fixed annual price. The catch, as always, is that more data only helps if you act on it.

So the fair verdict is not that Function is beaten across the board. It is that its strengths are concentrated in the tracker and data-lover use cases, and for the far larger group who wants one clear, interpreted annual baseline, a cheaper competitor does that specific job better.

What about accuracy and lab quality?

People worry that a cheaper service means a lower-quality result, so it is worth addressing directly. The services here run their samples through certified labs, and the accuracy of a given marker depends far more on the sample type and your prep than on the brand name on the box. A fasted morning venous draw handled by a certified lab is a fasted morning venous draw, whether it sits inside a $199 membership or a $365 one.

What actually varies between services is not usually the lab chemistry, it is three other things: which markers are included, how the results are interpreted for you, and how consistent your own conditions are draw to draw. That last one is on you. If you fast one year and eat breakfast the next, your trend line reflects your breakfast, not your health. Control the prep, use a certified-lab service, and the price tier is not the thing that decides whether you can trust the number.

Our pick among Function Health competitors

For the everyday goal of one comprehensive blood baseline you can track year over year, Superpower is the best-value Function Health competitor in 2026. It pairs a 100+ biomarker panel with scores and an AI concierge that turn data into next steps, at $199 per year instead of $365. Function Health remains the depth champion if you want 160+ markers and two draws, and that is a fair reason to pay more. But for most readers, the value math favors Superpower.

One safety note that applies to every service here: these are screening and tracking tools, not diagnoses. Any result outside the normal range should be reviewed with a clinician before you act on it.

Related reading on Vital Signs Today

• Function Health Review (2026): Worth It, or Is There a Better Option?
• Function Health Cost: Is the Annual Membership Worth It?
• Function Health Discount Code and Deals (2026)
• Superpower Blood Test Review (2026): Is It Worth the Membership?

Frequently asked questions

Who are the main Function Health competitors in 2026?

The main Function Health competitors are Superpower, Everlywell, and SiPhox Health. Superpower is the best-value full-panel membership at $199 per year, Everlywell wins for single-marker at-home kits, and SiPhox is built for finger-prick convenience. The right Function Health competitor depends on whether you want a broad baseline or one targeted test.

Is there a cheaper Function Health competitor that still tests a lot of markers?

Yes. Superpower covers 100+ biomarkers (about 150 with calculated ratios) for $199 per year, compared with Function Health at $365 for 160+ markers. For a once-a-year baseline, Superpower is the cheaper Function Health competitor while still giving you a broad panel plus 17 plain-language scores and an action plan.

Function Health vs Superpower: which should I pick?

Pick Superpower if you want the best value for an annual full-body baseline, simple scores, and an AI concierge at $199. Pick Function Health if you want maximum depth, 160+ biomarkers, and two draws per year with a built-in 6-month retest at $365. The Function Health vs Superpower choice comes down to depth versus value.

Are these at-home blood tests a replacement for seeing a doctor?

No. Every service on this list, including each Function Health competitor, is a screening and tracking tool, not a diagnostic clinic. They help you spot trends and ask better questions, but any result outside the normal range should be reviewed with a clinician who can interpret it in the context of your full health picture.

Should I use Everlywell or a full membership?

Use Everlywell when you have one specific question, such as checking thyroid or vitamin D, since its per-kit pricing is cheaper than any yearly plan for a single marker. Choose a full membership like Superpower when you want a broad annual baseline you can track over time rather than a one-off test.

What is the cheapest way to compare against Function Health overall?

For a broad annual baseline, Superpower is the cheapest full-panel competitor at $199 per year, versus $365 for Function Health, while still covering 100+ biomarkers plus 17 plain-language scores. For a single marker, an at-home kit from Everlywell or LetsGetChecked beats any membership on price. The cheapest option depends entirely on whether you are buying a whole-body picture or answering one question, so decide that first and the price comparison sorts itself out.

Which Function Health competitor has the most biomarkers?

Function Health itself leads on raw count at 160+ biomarkers with two draws a year. Among the alternatives, Superpower is the closest at 100+ markers (about 150 counting calculated ratios) for $199. If sheer breadth is your only criterion, Function wins, but Superpower delivers a comparable full-body picture with a stronger interpretation layer for less.

Is a finger-prick test as accurate as a Function Health blood draw?

For many markers a finger-prick sample is reliable, which is why services like SiPhox use it, but a venous blood draw supports a wider and more consistent panel, which is what Function Health and Superpower use. If you want maximum breadth and accuracy, choose a venous draw. If an appointment is the barrier stopping you from testing at all, finger-prick convenience is a reasonable trade for a narrower panel.

Do any Function Health competitors include a doctor review?

Several build in some clinical layer. Function Health provides clinician-reviewed summaries, Superpower has each result reviewed by a doctor within its membership, and LetsGetChecked adds nurse follow-up on certain out-of-range results. That said, none of these replace your own physician. Any abnormal result should go to a licensed clinician who knows your full history.

Can I switch from Function Health to a cheaper competitor without losing my history?

You can switch anytime, since these are annual memberships rather than long contracts, but your trend line does reset in the sense that a new service starts its own record. The practical fix is to keep copies of your past results, most services let you download them, and note the conditions of each draw. If you move to Superpower or another tracker, drawing under the same fasting and timing conditions keeps your old numbers meaningful as a comparison point even across platforms.