What the popular membership blood panel actually tests, which markers doctors trust, and how to get the useful core for far less.
This in-depth guide covers everything you need to know about function health review 2026: cost, tests and value. Based on verified income data and real-world case studies from our database of 138 side hustle tactics.
Function Health is a yearly blood-testing membership that costs $365 a year as of 2026, with a first draw of 100+ tests and a follow-up of 60+ tests a few months later, all read by a clinician. It is good value if you want a huge dashboard, but only a handful of those markers have strong evidence for healthy adults, and most of that useful core is free through insurance as preventive care or costs roughly $190 to $310 at a walk-in lab. The rest is interesting data that can also send you down a chain of follow-up tests you never needed.
What Function Health is
Function Health sells one thing: a lot of lab work, packaged with an app and a doctor's summary. Its co-founder and chief medical officer is Mark Hyman, described on the Function homepage as a "Former Cleveland Clinic physician." The same page lists a bench of well-known names as advisors or endorsers, including Andrew Huberman, former Cleveland Clinic CEO Toby Cosgrove and Harvard epidemiologist JoAnn Manson. Daniel Sodickson is named as chief medical scientist.
The company has grown fast. MedCity News reported on November 19, 2025 that Function closed a $298 million Series B at a $2.5 billion valuation, and that members had completed "more than 50 million lab tests" since launch. In May 2025, CEO Jonathan Swerdlin told CNBC, as syndicated by NBC New York, that the platform had "hundreds of thousands" of members. The company does not publish an exact count.
So who is the customer? Someone who already tracks sleep on a ring, reads longevity newsletters, and wants to see inside their own blood without arguing with an insurer. That describes a lot of people who follow Peter Attia or Bryan Johnson. Is that you?
Function Health cost in 2026
The headline number is simple. Function's pricing page says "Function memberships start at $365 per year," pitched as "$1 /day" and "Charged annually at $365." It is listed as HSA/FSA eligible, and the homepage says "No insurance, transparent pricing." The same page notes that the membership renews "at then-current price," so check the number on the day you sign up.
That $365 is a cut. When Function bought the imaging company Ezra in May 2025, NBC New York's CNBC report described the membership as a $499 yearly plan.
Here is what the base fee covers, according to Function's own pages:
- Two rounds of testing a year. The homepage FAQ describes a first visit of "100+ tests" and a follow-up of "60+ tests 3-6 months later." Function counts these together as "160+ lab tests" a year.
- Where you get drawn. "Test at 2000+ Quest locations nationwide, or schedule an at-home blood draw with a licensed specialist," per the homepage.
- Clinician review. "Clinicians review every result and flag issues," and each member gets a written summary and action items.
- On-demand testing for "an additional member-only cost," with no price given on the page.
The add-ons are where the bill can grow. Function lists "Access to MRI and CT," the Galleri multi-cancer test, Alzheimer's and brain testing and mold reactivity testing, with no prices shown on its pricing page. Ezra, the scan company Function bought, lists its 22 minute MRI at $899 for Function members and $999 for everyone else, with heart CT at $349, as of 2026.
A member who adds one MRI is already at roughly $1,264 for the year. Whether a scan of a healthy body is worth it is its own debate, covered in the sibling post on whether a full-body MRI is worth it.
What the 100+ biomarkers cover
Function groups its first panel into categories on its homepage. The counts it lists are:
| Category (Function's label) | Markers listed |
|---|
| Heart and metabolic | 18 |
| Hormones and thyroid | 16 |
| Cancer and other silent risks | 34 |
| Aging | 34 |
| Mental health and focus | 20 |
| "+More" | Not listed |
Tests named on the same page include ApoB, Lipoprotein (a), insulin, cortisol, ferritin, vitamin D, PSA, mercury and the Galleri multi-cancer test. The listed categories add up to 122, and the homepage elsewhere says "160+ lab tests" and "1000+ conditions." The marketing language is broad. The draws happen at Quest locations or at home; what Function sells on top is the bundle, the app and the summary.
Which of those 122 numbers would actually change what you do next week? That is the question worth carrying through the rest of this review.
Is Function Health worth it? What the evidence says
Medicine has a body whose whole job is deciding which screening tests help healthy adults: the US Preventive Services Task Force (USPSTF). Its grades are blunt. "A" and "B" mean the benefit is clear. "C" means it depends on the person. "D" means skip it. "I" means the evidence is too thin to call.
Run Function's menu through that filter and it splits into three piles.
The tests with strong backing
Blood sugar (HbA1c or fasting glucose). The USPSTF recommends screening for prediabetes and type 2 diabetes in adults aged 35 to 70 who have overweight or obesity (grade B, August 2021).
Cholesterol. The USPSTF's 2022 statin recommendation for adults 40 to 75 rests on a risk calculation that uses "age, cholesterol levels, systolic blood pressure level" and other factors. You cannot run that calculation without a lipid panel.
Hepatitis C. The USPSTF recommends screening all adults aged 18 to 79 (grade B, March 2020). This one gets forgotten, and it is a single test.
HIV. US health insurance rules list HIV screening "for everyone 15 to 65 years" among the preventive services plans must cover.
Two heart tests that specialists now push
Function puts two less common markers near the top of its marketing, and here it has a fair point.
Lipoprotein(a). This is a cholesterol-carrying particle that a standard lipid panel (total cholesterol, LDL, HDL, triglycerides) does not report. A 2024 statement from the National Lipid Association says "Lp(a) level should be measured at least once in all adults," and notes "the high prevalence of Lp(a) elevation (∼1 of 5 individuals)." Note the words "at least once." The same statement recommends "Cascade screening of first-degree relatives" of people with a high result, so one test can tell your whole family something useful.
ApoB. This counts the particles that drive plaque. A 2024 NLA expert consensus states that "ApoB has been shown to be superior to LDL-C in risk assessment both before and during treatment," and that when the two disagree, risk "generally aligns better with apoB or non-HDL-C." That is a specialist society's view; it has not become a USPSTF screening grade.
Has a doctor ever ordered either of these for you? For most people the answer is no, and that gap is the most honest selling point Function has.
The tests where the evidence is thin
Vitamin D. The USPSTF says the evidence is insufficient to assess screening for vitamin D deficiency in adults without symptoms (grade I, April 2021). An American Family Physician editorial notes that "The American Society for Clinical Pathology recommends against screening for vitamin D deficiency in the general population," and that Medicare-paid vitamin D tests rose 83-fold from 2000 to 2010.
Thyroid. The USPSTF found insufficient evidence to weigh screening "for thyroid dysfunction in nonpregnant, asymptomatic adults" (grade I, March 2015). If you have symptoms, that changes, and a doctor will test it anyway.
PSA. For men 55 to 69, the USPSTF says "The decision to be screened for prostate cancer should be an individual one" (grade C), and it recommends against PSA screening at 70 and older (grade D). The same page lists "frequent false-positive results" among the harms, and notes that in the PLCO trial more than two-thirds of men biopsied after a positive PSA test did not have prostate cancer. That recommendation dates from May 2018, and the page says an update is in progress. A membership that runs PSA automatically skips the conversation the Task Force says should come first.
Much of the rest, from heavy metals to a long list of hormones and inflammation markers, sits in a zone where no major screening body recommends routine testing of healthy people. The numbers may well be accurate. What nobody has shown is that knowing them, in someone without symptoms, leads to a longer or healthier life.
The over-testing problem
Here is the part the app does not put on the front screen.
A lab's "normal range" is usually built to include 95% of healthy people. The University of Utah's lab medicine curriculum spells out the result: "If you perform 20 or more independent tests ... then there is a greater than 50% likelihood that one or more tests will be 'abnormal' just from statistical variation."
Now scale that to 100. If each marker were independent, the chance that a perfectly healthy person sees every result in range would be 0.95 to the power of 100, about 0.6%. Real markers are linked to each other, so the true number is less extreme, but the direction is clear. Almost every Function member will see red flags. How would you feel opening an app with five of them?
Each flag can start a cascade: a repeat test, a specialist visit, an ultrasound, sometimes a biopsy. Those cost money, and some carry real risk. Anxiety is a cost too.
The big trials on routine checkups are sobering. A 2019 Cochrane review pooled results from 15 trials with 251,891 participants and found that general health checks "have little or no effect on the risk of death from any cause (high-certainty evidence)," little or no effect on deaths from cancer, and probably little or no effect on deaths from cardiovascular causes (moderate-certainty evidence). Those checkups were simpler than Function's panel, and that is exactly the point: more data has not yet been shown to buy more years.
A short note before going further: this is general information and is no substitute for medical advice. If a consumer panel flags something, take the report to your own doctor before you start any supplement, drug or extra scan.
Function Health vs competitors and cheap labs
How does $365 compare? Here are the main alternatives, priced from each company's own site as of October 2026.
| Option | Price (as of 2026) | What you get |
|---|
| Function Health | $365 a year | 100+ tests, then 60+ retest, clinician summary |
| Superpower | $349 a year | "150+ lab tests across 2 blood draws," AI and care team |
| InsideTracker | $489 membership plus one test | Up to 54 biomarkers |
| Quest Comprehensive Health Profile (men's) | $329 plus $6 physician fee | 75+ markers: CBC, CMP, lipids, A1c, hs-CRP, vitamin D, testosterone |
| Labcorp OnDemand Advanced Health Panel | $399 | 65+ markers including ApoB, thyroid, insulin, hs-CRP |
| Labcorp OnDemand Comprehensive Health Test | $189 | CMP, CBC, urinalysis, lipids, HbA1c |
On a cost-per-marker basis, Function and Superpower are cheap. On a cost-per-useful-answer basis, the cheaper Labcorp panel covers most of the high-evidence list for about half the price, once a year.
Notice what the subscription model does, too. A one-off panel ends when you get the results. A membership renews every year, at whatever the price is then.
How to get the useful core panel for less
You can build the evidence-backed core yourself. There are two routes.
Route one: your regular doctor, through insurance
US health plans must cover a set of preventive services "without charging you a copayment or coinsurance," according to HealthCare.gov. The list includes "Cholesterol screening for adults of certain ages or at higher risk," "Diabetes (Type 2) screening for adults 40 to 70 years who are overweight or obese," "Hepatitis C screening for adults 18 to 79 years," and HIV screening. The page adds that these services are generally free when an in-network provider delivers them, so use an in-network doctor and ask the office to code the visit as preventive.
At your annual visit, you can also ask for a one-time Lp(a) and an ApoB. Bring the NLA statement if you meet resistance. Your plan may or may not cover them, so ask what they will cost before the draw. When was your last lipid panel?
Route two: order it yourself at a walk-in lab
If you have no insurance or want results now, Labcorp OnDemand sells single tests with a provider sign-off included. List prices on its test catalog as of October 2026:
| Test | Labcorp OnDemand list price | Why it is on the list |
|---|
| Lipoprotein(a) | $49 | NLA: measure at least once |
| Cholesterol and Lipid Panel | $59 | Needed for the USPSTF heart risk calculation |
| ApoB | $69 | NLA: stronger risk marker than LDL-C |
| HbA1c | $39 | USPSTF grade B for adults 35 to 70 with overweight |
| Comprehensive Metabolic Panel | $49 | Kidney, liver, glucose and electrolytes |
| Complete Blood Count | $29 | Anemia and blood cell counts |
The catalog showed some of these on sale at 25% off when I checked. Bought one at a time at list price, the full six cost $294. That is close to Function's fee. The savings come from the next year: the NLA asks for Lp(a) at least once, so year two can drop to about $245 without it, and if your numbers were healthy, ask your doctor which ones you need to repeat and how often.
The cheapest option of all is to bundle. The $189 Comprehensive Health Test covers the lipid panel, HbA1c, CMP, CBC and a urinalysis. Add Lp(a) once and ApoB, and you have the high-evidence list for about $307 in year one.
Did you know you can usually pay for these with HSA or FSA money? The Lp(a) page lists HSA/FSA as accepted. Pre-tax dollars stretch further, the same logic that runs through richtactic's side hustle tax guide.
Where Galleri and the extras fit
Function sells the Galleri multi-cancer blood test as an add-on, and GRAIL's own site says it lacks FDA approval and is meant to sit alongside routine cancer screening. Its price and trial results are covered in the sibling post on longevity clinic and executive physical costs.
Mold reactivity, brain testing and imaging carry the same trade-off as the blood panel, only louder: each one adds a chance of a finding that leads to more tests.
Who gets real value from Function Health
There are people for whom the membership makes sense.
- People with no regular doctor who would otherwise get no blood work at all. A big panel once beats none, provided someone qualified reads it.
- People with a strong family history of early heart disease, where Lp(a) and ApoB matter and an insurer may resist paying.
- Data lovers who will act calmly. If you can see a borderline result, repeat it in three months and shrug, the anxiety cost stays low.
And there are people who will likely waste the money: anyone who already gets an annual physical with labs, anyone prone to health anxiety, and anyone hoping a dashboard will replace habits. Which group are you in, honestly?
If what you really want is a doctor who knows you and answers the phone, the better comparison is a monthly practice. See the sibling post on concierge medicine cost.
Function Health claims the evidence does not back
Here is the short list of things to skip or question, based on the sources above:
- Retesting everything twice a year when you are healthy. None of the screening guidance cited here calls for a 100-marker panel every six months in people without symptoms, and the NLA's Lp(a) advice is to measure it at least once.
- Vitamin D and thyroid screening without symptoms. Both carry USPSTF "I" grades.
- Automatic PSA without a conversation. The Task Force wants an individual decision for men 55 to 69 and recommends against it at 70 and older.
- Treating every flag as a problem. With dozens of markers, out-of-range results are expected in healthy people.
- Buying supplements to fix a number. An app's "protocol" may suggest them. If a marker is off, the next step is a repeat test and your doctor. For what the evidence says about popular pills, see the billionaire supplements roundup.
- Expecting more data to add years. The Cochrane review of routine checkups found little or no effect on deaths from any cause.
The money angle
Here is a frame worth keeping. $365 a year, every year, for 20 years is $7,300 before any price change. The core panel bought once a year at a walk-in lab, or free through insurance, leaves most of that in your pocket. Put the difference into a low-cost fund each year and it compounds, as the index investing guide shows. You do not need to be rich to know your ApoB.
What would $300 a year buy you that matters more than a dashboard? For some people, that is a gym membership. For others, it is the first month of savings toward knowing how much money is enough.
Your blood-test plan this week
You can get the useful part of Function Health in about an hour and for under $200, often for nothing.
- Find your last lab report in your patient portal. Note the date of your last lipid panel, HbA1c and hepatitis C test.
- Book your annual physical if it has been more than a year. Ask for a lipid panel, HbA1c and any USPSTF screens you are due for, coded as preventive.
- Ask for a one-time Lp(a) and an ApoB. If your plan will not cover them, Labcorp OnDemand lists them at $49 and $69 as of 2026.
- Write down your family history of early heart attacks, strokes and diabetes. Bring it. It guides which tests matter more than any app.
- Decide on Function only after that. If you still want the full dashboard, $365 is a fair price for what it is. Go in knowing that several numbers will be flagged, and that most of them will mean nothing.