Function Health vs Superpower: what $365 and $199 actually buy
Superpower costs $199 a year and Function Health costs $365, and in year one both can include two blood draws. The difference is in what each draw measures, who looks at your results, the terms you sign, and what each company sells you next. On measured markers Function's annual draw is roughly twice the size: Superpower's own comparison page counts 57 measured markers in its draw against 102 to 103 in Function's.
Prices checked Oct 9 to Nov 3, 2026 Terms read Nov 2 and 3, 2026
The short answer
Likely suits you if you want the bigger measured panel (including Lp(a) and the omega-3 index), a written clinician summary, and a published 60+ test mid-year retest.
Function Health explained →Likely suits you if price matters most, you want one broad baseline a year, you like an AI that turns results into a to-do list, and you'll ignore product suggestions you don't need.
Superpower explained →Probably skip both if you only want the handful of markers with the strongest evidence. ApoB, Lp(a) and HbA1c cost about $157 together on a one-off basis, and your doctor may order some of them under insurance (see Maybe neither).
Who has the edge, area by area
| Area | Edge | Why |
|---|---|---|
| Price, one draw a year | Superpower | $199 against $365, about $830 less over five years |
| Price, two draws a year | About even | Superpower about $114 less over five years, but its follow-up's contents aren't published |
| Measured markers | Function | 102 to 103 against 57 per annual draw, both by Superpower's count; Lp(a) included |
| Who reviews results | Function | A written clinician summary and calls about critical results; Superpower's care team is non-clinical |
| Refunds | Superpower | Up to 45 days against 48 hours |
| Cancelling | Function | Runs to the end of the cycle; at Superpower, access ends when you cancel |
| Where it's sold | Function | Not sold in 2 states (and Puerto Rico) against Superpower's 9 |
| Evidence for the program | Neither | No study of either membership's health outcomes |
"Edge" is BML's reading of the facts below, not a rating. It says which one does better on that point, not which one you should buy.
This is a research comparison, not a hands-on review. We haven't been a member of either service, neither company saw or approved this page, and no provider can pay to be listed or ranked here. It isn't medical advice.
At a glance
Every fact below was checked against each company's own US site between October 9 and November 3, 2026, including Superpower's checkout page and both companies' terms. Where only one side makes a claim, we say so.
| Feature | Function Health | Superpower |
|---|---|---|
| Membership | $365/yr, renews at the then-current price | $199/yr, renews at the "then-current, non-promotional" rate. Was $349 from about Sep 1 to mid-Oct 2026 |
| New York and New Jersey | $365 offer excludes NY and NJ; lab fees charged at the draw, amount not published | $399/yr (Superpower's comparison page; its homepage says only "may vary") |
| Draws in year one | Two: 100+ tests, then 60+ tests 3 to 6 months later | Two for new members who claim the "complimentary follow-up test" offer; follow-up contents not published |
| Draws in later years | Two | One; follow-up price not published ($179 reported in Jan 2026) |
| Measured markers in the annual draw | 102 to 103 (per Superpower's own count) | 57 measured, plus 46 calculated (Superpower's count) |
| Lp(a) | Included in the annual draw | Add-on, $79 Not in Superpower's current annual list (its pages conflict) |
| Where blood is drawn | 2,000+ Quest sites, or at home (fee not published) | 2,000+ Quest sites, or at home for $119 |
| Turnaround | First results about 48 hours; clinician notes take weeks | "10 days or less"; reviewers report 4 to 10 days |
| Results review | Written clinician summary; a provider calls about critical results | AI plan; the "care team" is non-clinical under Superpower's agreement; no stated process for critical results |
| Doctor visit included | No | No |
| Biological age | Estimate based on PhenoAge | PhenoAge estimate, plus Pace of Aging and 17 scores (methods not published) |
| Not available in | RI, HI, Puerto Rico | AK, AR, HI, LA, MS, ND, RI, SD, WY |
| Refunds | Full refund within 48 hours of purchase, before any sample | Full first-year refund within 7 days of first results or 45 days of joining, whichever comes first |
| Cancelling | Takes effect at the end of the billing cycle | Takes effect immediately; concierge and marketplace access end (agreement). The homepage says access lasts to the end of the paid year |
| HSA/FSA | Company says eligible | Company says eligible |
| Trustpilot | 4.5 from 3,106 reviews (Nov 2, 2026) | 4.4 from 365 reviews (Nov 3, 2026) |
Full listings on our comparison page, and our deep dives on Function and Superpower.
What year one actually costs
In year one, a new member can get two draws from either service: $199 at Superpower against $365 at Function. That $166 gap is real, but the two second draws aren't the same product.
- Function Health100+ tests, then a published 60+ test retest
- Superpower100+ results, then a follow-up with unpublished contents
- Function's mid-year draw is a published panel of 60+ tests. Our Function Health deep dive found it repeats the lipid panel, ApoB, HbA1c, insulin and glucose, but not Lp(a), thyroid, hormones, vitamin D or ferritin.
- Superpower's follow-up is a new-member offer the homepage values at $99. You claim it with your email and it is added at checkout. Superpower doesn't say which markers it covers; its marketplace says it checks "whether your plan improved biomarkers that were out of range", which suggests a targeted retest rather than the full panel. Ask for the marker list in writing before you rely on it.
Superpower's own pages disagree on whether a second draw is part of the membership: its comparison table says a follow-up is "Not included", while the FAQ on the same page and its marketplace say "two blood tests per year" (the six pages, side by side). From September 1 to mid-October 2026 Superpower sold a $349 plan with two draws; by November 3 checkout offered only the $199 plan.
After year one the gap changes. Function still includes two draws for $365. Superpower renews for one draw, and follow-ups are paid add-ons. Independent reviews in early 2026 reported $179 for a follow-up, which would put two Superpower draws at $378, slightly more than Function.
Costs neither company publishes in full: single extra markers, add-on panels, and Function's NY/NJ and at-home fees. Superpower does publish $119 for at-home draws and $399 for NY/NJ on its comparison page, and its marketplace lists add-on prices. Budget for whichever apply to you.
How each counts its biomarkers
Neither headline number tells you how many separate things are measured in your blood. "160+" and "100+" are counted in different ways, and the difference ended up in court.
- Function Healthannual draw
- Superpowerone draw a year
- Function: measured
- Superpower: measured
- Superpower: calculated from those results
Both counts come from Superpower's Superpower vs Function Health page (Oct 30, 2026), a company claim about a competitor. Function doesn't publish a split of its own.
- Function's 160+ is a yearly total across two draws, so markers tested twice count twice. The annual draw alone is 100+.
- Superpower's 100+ comes from one draw. Superpower's own comparison page breaks it into 57 measured markers and 46 calculated ones, such as calculated LDL, the Castelli risk indices, the TyG index and its BioAge and Pace of Aging scores.
- The lawsuit. Function sued Superpower in January 2026, alleging only about 55 of Superpower's "100+" were direct lab measurements, among other claims (Arent Fox Schiff). The case settled in June 2026 and was dismissed without a ruling on who was right (court docket). Superpower's own 57-measured figure is now close to Function's allegation.
Calculated markers aren't worthless: a ratio or score can be useful. But they don't need extra blood or lab work, so they shouldn't be compared one-for-one with measured tests. The fairer comparison is marker by marker, below.
Marker by marker
On the core heart and metabolic markers the two panels match, but several markers people ask about are included at Function and sold as add-ons at Superpower. The Superpower column follows its own 101-marker list of what the annual draw includes (published October 30, 2026), not its homepage tiles. That list looks incomplete: one member's October 2026 results included fasting insulin, LH, FSH and a urinalysis that it doesn't mention (Long Run Labs).
| Marker | Function Health | Superpower |
|---|---|---|
| ApoB | Yes twice yearly | Yes |
| Lipid panel | Yes twice yearly | Yes LDL calculated |
| HbA1c and glucose | Yes twice yearly | Yes |
| hs-CRP | Yes twice yearly | Yes |
| Fasting insulin | Yes twice yearly | Unclear: not on its annual list (a $59 add-on exists), but a member's October 2026 results included it |
| Lp(a) | Yes yearly | Add-on, $79 A member's October 2026 plan told him to buy it. Some Superpower pages and two earlier 2026 reviewers say included |
| Testosterone (total and free), SHBG, DHEA-S | Yes | Yes |
| Estradiol | Yes | Yes implied by its testosterone-to-estradiol ratio |
| Thyroid: TSH | Yes | Yes |
| Thyroid: free T4 | Yes | No total T4 and free thyroxine index instead |
| Thyroid antibodies (TPO, TgAb) | Yes | Add-on, $99 |
| Vitamin D | Yes | Yes |
| Ferritin and iron | Yes | Yes |
| Cortisol, uric acid | Yes | Yes |
| Homocysteine | Yes | No not in annual list |
| PSA | Yes | Add-on, $49 |
| Lead and mercury | Yes | Add-on, $289 heavy metals, urine |
| Omega-3 index | Yes | No not offered |
| Cystatin C | No not listed | Unclear: labelled baseline on one page, absent from annual list |
Sources: Function's What we test page, as read for our Function Health deep dive (Nov 2, 2026); Superpower's annual-panel list, biomarker page and test marketplace (Nov 3, 2026). Check both lists before you buy. For what each marker means, see our glossary.
Who reviews your results
Neither membership includes a doctor's visit, and neither names the medical group whose clinicians order your tests. Function puts a clinician's written summary on every result; Superpower puts an AI first and, under its own agreement, its "care team" is not clinical.
| Step | Function Health | Superpower |
|---|---|---|
| Who explains results | Written clinician summary, arriving weeks after the first results | Superpower's AI writes a plan as soon as results land; Superpower says clinicians review "edge cases and changes that matter" |
| Who answers questions | Function's AI chat first; a person can take a business day or more | Kin (AI) first, with possible usage limits and paid credits; then the "care team" by text |
| What the care team is | Clinicians write the summary | Customer service, dietitians, health coaches and wellness advisors, for "general educational guidance only" (Membership Agreement) |
| Critical results | A provider calls right away (FAQ) | No process described; the agreement makes you responsible for follow-up |
| Prescriptions | None (per Superpower's comparison) | After a consultation with a provider from an independent medical group; priced separately |
Members' complaints follow the same lines: Function's clinician notes are often called generic, and Superpower reviewers more often say they never reached a human. Function's 2026 lawsuit alleged that Superpower's advertised "24/7 clinical team" was mostly dietitians and coaches; it settled without a ruling.
In both cases, plan to take anything flagged to your own doctor. A dashboard can tell you a marker is out of range; it can't diagnose or treat you.
What each sells you next
Both memberships are priced low enough that the add-ons matter to the business. Knowing what's on offer helps you read your plan with a clear head.
| Add-on | Function Health | Superpower |
|---|---|---|
| Imaging | Owns Ezra. Annual full-body MRI $899 for members, $999 otherwise; lung and heart CT | Heart calcium CT $379, DEXA $199, whole-body MRI through Prenuvo (price not shown) |
| Cancer screening | Galleri (about $749, third-party reported) | Galleri $699 |
| Other tests | Extra single markers on demand, extended panels, brain and mold testing (prices mostly not public) | 41 add-on tests from $49 to $699, prices published: gut microbiome $239, environmental toxins $399, mold toxins $395, organ age $99 |
| Supplements | Supplement matching through SuppCo, which Function acquired in May 2026 | Its own store, up to 20% off for members |
| Prescriptions | Not offered, per Superpower's comparison | Dozens, including compounded hormones and peptides, "when clinically appropriate"; non-refundable |
Superpower's prices come from its test marketplace, checked November 3, 2026. Its agreement discloses that Superpower's owners and staff may have a financial interest in the providers and sellers it uses, and its comparison pages present the marketplace as a main reason to join. A plan that recommends products the same company sells isn't necessarily wrong, but it is a commercial incentive worth keeping in mind. One reviewer given free testing by Superpower estimated its full recommended plan at $6,000 to $8,000 a year (Worth).
On the evidence: our Function deep dive found that the American College of Radiology doesn't support full-body MRI for people without symptoms or risk factors, and Galleri's large NHS trial missed its primary endpoint. Those findings apply whichever company sells you the test. Our Superpower deep dive adds that compounded peptides lack trials for the uses they are marketed for, even after the FDA's 2026 interim policy, and that Superpower's biological age, Pace of Aging and organ age scores have no published validation.
Five-year cost
Over five years at today's prices, Superpower is about $830 cheaper if you test once a year, but only about $114 cheaper if you test twice a year like Function. If Superpower's renewals go back to $349, the one-draw saving shrinks to about $230.
- Function, two draws a year
- Superpower, two draws a year (follow-ups at the $179 reported in early 2026)
- Superpower, one draw a year, if renewals go back to $349
- Superpower, one draw a year (plus the free year-one follow-up)
| Plan over 5 years | Draws | Total |
|---|---|---|
| Superpower, one draw a year Plus the free year-one follow-up | 6 | $995 |
| Superpower, one draw a year, if renewals are charged at $349 | 6 | $1,595 |
| Superpower, two draws a year Follow-ups at the $179 reported in early 2026 | 10 | $1,711 |
| Function, two draws a year | 10 | $1,825 |
Membership costs only, before add-ons, at-home draws or NY and NJ pricing. Lp(a) once adds $79 at Superpower and is included at Function. Both companies changed their prices in the past year: Function cut from $499 to $365 in November 2025, and Superpower charged $349 for about six weeks in autumn 2026. Both renew at a "then-current" price, and Superpower's agreement specifies the "non-promotional" rate. Treat any multi-year figure as an estimate.
Where each is sold
Function is sold in more places. Seven states have Function but not Superpower; Hawaii and Rhode Island have neither. Both charge more in New York and New Jersey, but only Superpower says how much.
- Both sold at the standard price39 states and DC
- Both sold, at a higher price (Superpower $399; Function lab fees not published)NY, NJ
- Function only (Superpower not sold)AK, ND, WY, SD, AR, LA, MS
- Neither soldRI, HI
Where both sit among 13 US options
Against the 13 US blood-test options we track, Superpower is the cheapest membership and Function is just under the $399 median. Only Strut Health's one-off panel costs less than Superpower in year one.
- Strut Health
- Superpower
- Mito Health
- Ultrahuman
- Function Health
- Everlywell
- Labcorp OnDemand
- Quest
- InsideTracker
- OneTwenty
- Lifeforce
- Marek Health
- Rythm Health
Median $399
- Function Health
- Superpower
- Other providers
BML comparison data, prices checked October 9 to November 3, 2026. SiPhox ($124 per test) left out as not comparable. Ordered by price, not ranked.
Price isn't the only difference. Lifeforce and Marek include a consultation, and Mito, Quest, Labcorp, OneTwenty, Lifeforce and Marek say a physician orders your tests. Function and Superpower state neither. See every option on our blood test comparison.
Who's behind each company
Function is the much bigger business: it has raised roughly 15 times more money than the highest reported Superpower total and reports hundreds of thousands of members. Superpower is younger and smaller, and leans harder on AI, celebrity backers and its own product store. Funding is context, not evidence that either service works.
- Function HealthSeries A, Series B and a growth financing
- Superpowerhighest reported total, Feb 2026
Function: Series A, the $298M Series B and a $450M growth financing; reports don't say whether the last is equity. Superpower: Capital Brief's US$51M total (Feb 2026); the announced rounds are a $4M pre-seed and a $30M Series A, and Forbes Australia reported more than A$65M (Apr 2026).
| Company | Function Health | Superpower |
|---|---|---|
| Founded | 2021, launched 2023; Austin, Texas | 2023; San Francisco |
| Founders | Jonathan Swerdlin (CEO) and Dr Mark Hyman (Chief Medical Officer), among others | Max Marchione (grew up in Sydney; CEO in 2026 coverage), Jacob Peters (public spokesperson at the 2025 launch) and Kevin Unkrich (technology) |
| Medical leaders named | Mark Hyman; board includes JoAnn Manson and Andrew Huberman | Advisory board: Leigh Erin Connealy, Robert Lufkin, Alex Tatem, Abe Malkin. Anant Vinjamoori listed as chief longevity officer |
| Money raised | About $800 million across Series A, Series B and a $450 million growth financing | $4 million pre-seed and a $30 million Series A announced; US$51 million in total reported (Feb 2026) |
| Valuation | $2.5 billion at the November 2025 Series B | Over $300 million at the April 2025 Series A; reported above $500 million in July 2026 |
| Members | "Hundreds of thousands" (NPR, April 2026) | Not audited: 64,000+, 80,000+ or 150,000+, depending on the Superpower page |
| Notable backers | General Catalyst | Forerunner Ventures, Winklevoss Capital, and reported celebrity investors including Vanessa Hudgens, Steve Aoki, Logan Paul and Giannis Antetokounmpo |
Medical reputations
Both companies put integrative or functional-medicine doctors near the top. That's worth knowing, because that school of medicine tends to favour broad testing and supplements more than mainstream guidelines do.
- Mark Hyman (Function) is a well-known functional-medicine physician and author. Our thought leaders page notes he sells his own 13-product supplement line, and Function bought the supplement-rating platform SuppCo in May 2026.
- JoAnn Manson (Function) is a Harvard professor who led VITAL, one of the largest randomised trials of vitamin D and omega-3 supplements. Hers is the most mainstream research credential on either board.
- Andrew Huberman (Function) is a Stanford neuroscientist best known for his podcast.
- Leigh Erin Connealy (Superpower) is medical director of the Center for New Medicine and Cancer Center for Healing in Irvine, California, an integrative clinic, and author of a book on integrative cancer care.
- Robert Lufkin (Superpower) is a radiologist and author of Lies I Taught in Medical School, which argues mainstream medicine has missed the role of metabolic health.
Two Superpower advisers have regulatory history worth knowing. In 2017 the Medical Board of California filed an accusation against Dr Connealy over the care of two patients; it settled with a public reprimand for poor recordkeeping, and the negligence charges were not upheld. Superpower's own profile of her lists non-standard cancer therapies her clinics offer, such as hyperthermia and RGCC testing. Dr Abe Malkin, also on Superpower's board, founded Drip Hydration, which agreed in 2024 to stop certain ketamine IV claims after a National Advertising Division challenge. Superpower also lists urologist Dr Alex Tatem; we found no controversies. It doesn't name a chief medical officer or the medical group that orders tests. Details and sources are in our Superpower deep dive.
Timeline, newest first
| Date | Company | Event |
|---|---|---|
| Oct 2026 | Function | Google Health partnership announced (not yet live) |
| Sep to Oct 2026 | Superpower | $349 two-draw plan for about six weeks, then back to $199 |
| Jul 2026 | Function | $450 million growth financing from General Catalyst |
| Jul 2026 | Superpower | Valuation reported above $500 million |
| Jun 2026 | Superpower | Giannis Antetokounmpo named global brand ambassador |
| Jun 2026 | Both | Function's lawsuit against Superpower settled and dismissed; terms not public |
| May 2026 | Function | Acquired SuppCo (supplement ratings) |
| Apr 2026 | Function | Acquired Getlabs (at-home blood draws) |
| Jan 2026 | Both | Function sues Superpower |
| Nov 2025 | Function | $298 million Series B at $2.5 billion; price cut from $499 to $365 |
| Aug 2025 | Superpower | $199 membership with one yearly test replaces the $499 plan with two |
| Jun 2025 | Superpower | Acquired Base (at-home finger-prick and saliva testing) |
| May 2025 | Function | Acquired Ezra (full-body MRI) |
| Apr 2025 | Superpower | $30 million Series A led by Forerunner |
| Jan 2025 | Superpower | Acquired Feminade (women's hormone testing) |
| Nov 2024 | Function | Expanded to New York and New Jersey |
| Jun 2024 | Function | $53 million Series A |
Sources: our Function and Superpower deep dives; SmartCompany and Fierce Healthcare on Superpower's Series A; Longevity.Technology on the $199 plan; Fitt Insider and Femtech Insider on acquisitions; Titan founder profile on the 2026 valuation; Las Vegas Sun on the ambassador role.
What members say
Members of both rate them well on Trustpilot, and the complaints follow the same pattern: support that starts with a bot, Quest draws that go wrong, and billing surprises. Function's praise centres on finding things a physical missed and its dashboard; Superpower's on its AI explanations, price and speed.
- Function: five-star
- Superpower: five-star
- Function: one-star
- Superpower: one-star
From Trustpilot's profiles: Function 4.5 from 3,106 reviews (Nov 2, 2026), Superpower 4.4 from 365 (Nov 3, 2026). Superpower's reviews are more polarised: more five-star and more one-star than Function's.
| Measure | Function Health | Superpower |
|---|---|---|
| Replies to negative reviews | All, usually within 24 hours | About 55%, typically within a week; the newest unanswered |
| Better Business Bureau | B-, 71 complaints over three years (as reported by Agewell) | B+, not accredited, 1 complaint since Feb 2026 (checked directly) |
| Our coded sample | 340 items: 148 Trustpilot, 174 Reddit, 18 expert | 213 items: 199 Trustpilot, 14 expert, 2 Reddit |
| Positive / negative (Trustpilot items) | 77% / 11% | 80% / 15% |
| Most praised | Finding things a standard physical missed; the dashboard; fair price for the test count | The AI plan and explanations; price; fast results |
| Most criticised | Generic clinician notes arriving weeks later; Quest order problems; bot-first support; renewals and refunds | Slow support and no phone line (the most frequent complaint); lost or cancelled draws; billing and cancellation; upselling; a new monthly cap on AI messages |
Superpower's Trustpilot profile says it invites customers to review, yet every review we sampled was labelled unprompted, about 20 five-star reviews arrived on May 20, 2026 alone, and one five-star reviewer said he was a Superpower affiliate. Our Superpower sample has almost no Reddit, so it leans on Trustpilot more than Function's did. These ratings measure ordering, scheduling and support, not whether testing improves your health.
Hands-on reviewers
None of these meets all of our review rules (named writer, date, how the service was obtained, time used beyond one panel), so treat them as context. Five of Superpower's eight hands-on reviewers got it free, discounted or sponsored.
- Heal Nourish Grow, Cheryl McColgan (comparison, updated September 2026): paid for and used both; uses affiliate links. Rated Function 4.3/5 and Superpower 4.0/5. Found Function better at explaining what results mean and Superpower better at helping you act on them. Superpower results arrived in four days. Her biological age came out 37.3 at Function and 45.2 at Superpower, a reminder that these scores aren't comparable across companies.
- Long Run Labs, Jonathan Levitt (26 October 2026): one Superpower cycle, from someone with nearly 60 blood tests since 2014. Praised the specific, timed protocol; recommended add-ons came to $237.20 on top of the membership, and he never spoke to a clinician. Sponsored by Superpower, though it didn't approve the piece; uses affiliate links, and he is also making a video Superpower will run as paid ads.
- Worth, Dan Costa (review, March 2026): free Superpower panel. Skeptical of the plan's cost, estimating $6,000 to $8,000 a year if followed in full.
- BGR, Christian de Looper (review, May 2026): discount code from Superpower. Verdict "maybe"; noted heavy upselling and an AI explanation that contradicted its own flag.
- Athletech News (review, January 2026): one Superpower cycle, results in about a week, clinician contact mostly through the AI concierge. Doesn't say whether it paid; uses affiliate links.
- Function's long-term reviewers are covered in our Function deep dive: a four-round user who calls it one of her most useful tools, a TIME writer who had 20 of 105 results out of range and had to find a cardiologist herself, and others who found the clinician notes generic. The full Superpower list, with each reviewer's disclosure, is in our Superpower deep dive.
How we did this: both sides use the same coding method. Function's themes come from 340 reviews and comments (148 Trustpilot, 174 Reddit, 18 expert), coded November 2, 2026. Superpower's come from 213 (199 Trustpilot, 14 expert, 2 Reddit), coded November 3, 2026; Reddit couldn't be sampled for this version, so its picture is less complete.
BML scorecards
On our scorecard, Function wins on testing performance, Superpower wins on terms, and they tie on cost, clinical support and service reliability. The evidence behind both is the same, and equally thin for the program as a whole. We use labels, not numbers, and the same method (v0.1) for both.
| Area | Function Health | Superpower |
|---|---|---|
| Testing performance | Strong 100+ markers measured at Quest, twice a year, Lp(a) included | Moderate 57 measured markers once a year; Lp(a) and PSA appear to be add-ons; the published marker list and follow-up contents are incomplete |
| Cost | Low $365 for two broad draws | Low $199 for one broad draw, the lowest membership we track; two draws in year one for new members |
| Clinical support | Limited Written summary and critical-result calls; no consultation | Limited AI first; non-clinical care team; no stated critical-result process |
| Service reliability | Mixed Missing Quest orders, bot-first support, billing complaints; replies to every negative review | Mixed Slow support is the top complaint; lost or cancelled draws; billing problems; replies to about half of negative reviews |
| Terms | Weak 48-hour refund window, expiring mid-year draw, renewal at the then-current price, arbitration | Mixed Better refund (7 days after results or 45 days); but cancellation ends services at once, renewal at the "non-promotional" rate, AI usage limits, arbitration, and pages that contradict the agreement |
| Evidence: key markers matter | High | High |
| Evidence: broad, repeated testing improves health | Low | Low |
| Evidence: imaging, cancer and other add-ons help healthy people | Low | Low Also covers Superpower's age scores, organ age, AI plan and compounded peptides |
A darker label marks the better of the two where they differ. The labels and reasons come from our deep dives on Function (340 coded reviews) and Superpower (213 coded reviews). Superpower's service-reliability label may change once Reddit is coded. Neither company had any input. How we score: How we choose.
Maybe neither: buying markers one at a time
If you want the few markers with the strongest evidence behind them, you can buy them once for less than either membership. Our Function deep dive priced them through Labcorp OnDemand: ApoB $69, hs-CRP $69, lipid panel $59, Lp(a) $49 and HbA1c $39.
- ApoB, Lp(a), HbA1cLabcorp OnDemand, once
- Superpower + Lp(a) add-onall five, plus the rest of its panel
- All five markersLabcorp OnDemand, once
- Functionall five, plus the rest of its panel, twice
Labcorp OnDemand list prices checked November 2, 2026, for our Function deep dive. Some were on sale when checked.
Lp(a) is largely genetic, so most people only need it measured once. Before paying anything, ask your doctor: lipid and diabetes screening are covered preventive services under the Affordable Care Act for many adults.
A membership makes more sense if you want broad repeat testing and a dashboard to track trends. Our Function deep dive found no trial showing that broad, repeated testing in healthy people improves outcomes, and roughly 5% of normal results fall outside reference ranges by chance, which can lead to follow-up tests you didn't need.
FAQ
Is Superpower cheaper than Function Health?
Yes. Superpower is $199 a year and Function is $365. In year one both can include two draws, if you claim Superpower's new-member follow-up. From year two, Superpower includes one draw and charges for follow-ups, so two draws a year cost about the same at both.
Which tests more biomarkers?
Function. Superpower's own comparison page counts 57 measured markers in its draw against 102 to 103 in Function's annual draw; the rest of Superpower's "100+" are calculated ratios and scores. Function's "160+" also counts its mid-year repeats.
Is Lp(a) included?
At Function, yes, in the annual draw. At Superpower, it isn't in its current annual-panel list, it's sold as a $79 add-on, and a member's October 2026 plan told him to buy it, though some of its pages say otherwise. Ask before you join.
Do both use Quest?
Yes. Both draw blood at 2,000+ Quest locations. Superpower charges $119 for at-home draws; Function doesn't publish its fee.
Does either include a doctor?
Neither includes a doctor's visit. Function gives a written clinician summary of every result. Superpower's plan is AI-written, and its "care team" is non-clinical under its own agreement.
Which has the better refund policy?
Superpower. It refunds the full first-year fee within 7 days of your first results or 45 days of joining, whichever comes first. Function's window is 48 hours and closes once a sample is taken. Neither refunds renewals.
Are they available in every state?
No. Function isn't available in Rhode Island, Hawaii or Puerto Rico. Superpower isn't available in Alaska, Arkansas, Hawaii, Louisiana, Mississippi, North Dakota, Rhode Island, South Dakota or Wyoming. Both cost more in New York and New Jersey: Superpower says $399 a year on its comparison page, and Function charges lab fees at the draw without publishing the amount.
Can I pay with HSA or FSA funds?
Both companies say yes. Check with your plan administrator.
Why did Function sue Superpower?
Over how Superpower counted biomarkers in its marketing, among other claims. The case was filed in January 2026, settled, and was dismissed in June 2026 without a ruling.
Sources and disclosure
Prices and facts were checked against each company's own US website from 9 October to 3 November 2026, and match our deep dives on each service. This page was drafted with Claude, an AI tool, and every figure was checked against the sources below. Neither company saw or approved it, and no provider can pay to be listed or ranked. Not medical advice.
- Build My Longevity: Compare longevity tests, Function Health explained, Superpower explained
- Function Health: Function membership is now $365/year, functionhealth.com, What we test
- Superpower: superpower.com, checkout, FAQs, Membership Agreement (Sep 15, 2026), Privacy Policy (Oct 20, 2026), Biomarkers, Test marketplace, Superpower vs Function Health (written by Superpower, updated Oct 30, 2026)
- Independent: Athletech News, Superpower blood test review (January 2026); Heal Nourish Grow comparison; Worth; BGR; Arent Fox Schiff on the lawsuit; court docket; Trustpilot: Superpower; Trustpilot: Function Health; BBB: Superpower Health
Updates
| Nov 3, 2026 | Corrections after publication: fasting insulin at Superpower now "unclear" rather than an add-on; Long Run Labs link and disclosures; court docket link updated |
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| Nov 3, 2026 | First published |