Function Health review (2026)
An in-depth breakdown of Function Health's testing, pricing, features, reviews, and alternatives.
By Elo, last updated:
Quick verdict
Function Health is excellent for a first comprehensive baseline
At $365, the panel is broad and the results experience is polished. It is harder to justify year after year if you already know which markers matter to you or want ongoing treatment and clinician access.
Best for
- A first deep baseline beyond routine annual bloodwork
- People who want advanced lipids, hormones, nutrients, and trends in one dashboard
- People who already have a doctor willing to act on the results
Not ideal for
- People who need diagnosis, treatment, or ongoing clinician conversations
- People tracking only a short list of known biomarkers
- Anyone who is likely to feel overwhelmed by incidental out-of-range results
| Category | Assessment |
|---|---|
| Panel breadth | Excellent |
| Price | Good for a broad panel |
| Dashboard and apps | Excellent |
| Written guidance | Limited in my results |
| Retesting | Good: a focused mid-year draw is included |
My experience with Function Health
I paid for Function Health and completed its lab process when the service first launched. The appeal was straightforward: I could test advanced markers such as ApoB, Lp(a), lipoprotein particle sizes, hormones, and nutrients without persuading a doctor to order each one.
The blood draw was simple, and the report remains the strongest part of the product. Each marker has a readable explanation, reference range, and trend view. Function also costs far less than rebuilding the same broad panel test by test.
The follow-up fell short for me. My clinician-reviewed written summary largely restated flagged results and offered broad lifestyle and supplement suggestions. It was useful context, but it was not comparable to a conversation with a clinician who knew my history. Function has since improved historical-result imports, which now feed uploaded lab data into its trend views.
My bottom line is that Function is still a good first comprehensive baseline, but its pricing story has changed. It is now only slightly more expensive than Superpower ($349 standard) while remaining far more expensive than Empirical Health ($190). I would choose it for breadth and presentation, not for ongoing medical care.
How Function Health works
- Join for $365 per year. Function offers one annual membership tier and does not bill insurance, although eligible HSA and FSA funds can be used.
- Schedule at Quest. Members book through their Function account at one of more than 2,000 Quest Diagnostics locations. Function says a typical visit takes about 15 minutes.
- Complete the annual panel. Most members can finish the 100+ biomarker panel in one visit; some circumstances require two. Function recommends an eight-hour fast, hydration, and a morning appointment.
- Review results as they arrive. Individual results begin appearing within days. Function says the complete set generally takes three to four weeks, followed by a clinician-written summary.
- Retest mid-year. About 60 biomarkers are included in a second draw three to six months later. The mid-year tests must be used before renewal and do not roll over.
These logistics were verified against Function's official FAQ on August 15, 2026. Function provides testing and written context, not diagnosis, treatment, or a continuing doctor-patient relationship.
Function Health compared with other panels
- Function Health vs InsideTracker
100+ biomarkers twice a year vs an athlete-focused panel with an action plan.
- Function Health vs Mito Health
The category leader vs a doctor-reviewed longevity panel that undercuts it on price.
- Function Health vs Marek Health
Broad preventive screening vs a hormone- and TRT-focused panel with a clinician review.
- Function Health vs Everlywell
A membership with 100+ markers vs Everlywell's one-off 83-biomarker mail-in kit.
- Function Health vs Empirical Health
The best-known panel vs a physician-led service with medication and lifestyle guidance.
Lab tests included in Function Health
Function markets its panel as 160 biomarkers, 100 tested at the initial draw and another 60 re-tested at the mid-year visit. The markers span roughly 18 categories, including heart, metabolic, thyroid, male and female hormones, nutrients, liver, kidney, blood, electrolytes, immune and autoimmune, and cancer markers. The table below shows how the panel compares with Superpower, Empirical Health, and InsideTracker.
Swipe to compare providers →
| Feature | Function Health Annual Membership | Superpower Basic | Empirical Health Comprehensive Health Panel | InsideTracker Ultimate |
|---|---|---|---|---|
| Price | $365 | $349 | $190 | $499 |
| Number of Biomarkers | 114 | 59 | 100 | 48 |
| Features | ||||
| iOS app | ✓ | ✓ | ✓ | ✓ |
| Web app | ✓ | ✓ | ✓ | ✓ |
| Android app | ✓ | — | ✓ | ✓ |
| Wearable integration | ✓ | ✓ | ✓ | ✓ |
| Testing Frequency | 2×/year | 2×/year | On demand | On demand |
| Prescriptions | — | ✓ | ✓ | — |
| Access to clinicians | — | ✓ | ✓ | — |
Function, Superpower, Empirical Health, and InsideTracker all overlap on the routine blood count, metabolic, liver, kidney, thyroid, and hormone foundations. The category table below keeps the closest head-to-head readable: Function's extra coverage versus Superpower is concentrated in advanced lipids, omega fatty acids, heavy metals, and urinalysis, while Superpower includes several individual metabolic and nutrient markers Function omits.
| Category | In both | Function only | Superpower only |
|---|---|---|---|
| Complete Blood Count | 10 Basophils, Eosinophils, Hematocrit, Hemoglobin, Lymphocytes, Monocytes, Neutrophils, Platelet Count, Red Blood Cell Count, White Blood Cell Count | 3 Mean Corpuscular Volume (MCV), Mean Platelet Volume (MPV), Red Cell Distribution Width (RDW) | — |
| Heart & Lipids | 7 Apolipoprotein B, Cholesterol/HDL Ratio, HDL Cholesterol, LDL Cholesterol, Non-HDL Cholesterol, Total Cholesterol, Triglycerides | 7 Large HDL Particles, LDL Particle Number, LDL Pattern, LDL Peak Size, Lipoprotein (a), Medium LDL Particles, Small LDL Particles | 1 Atherogenic Index of Plasma |
| Metabolic & Diabetes | 3 Glucose, Hemoglobin A1c, Uric Acid | 1 Leptin | 1 Fasting Insulin |
| Liver | 8 Alanine Aminotransferase, Albumin, Albumin/Globulin Ratio, Alkaline Phosphatase, Aspartate Aminotransferase, Gamma-Glutamyl Transferase, Globulin, Total Bilirubin | — | 2 Direct Bilirubin, Indirect Bilirubin |
| Kidney & Electrolytes | 8 BUN (Blood Urea Nitrogen), BUN/Creatinine Ratio, Calcium, Carbon Dioxide (CO2), Creatinine, eGFR (Estimated Glomerular Filtration Rate), Potassium, Sodium | 1 Chloride | — |
| Thyroid | 3 Free T3 (Triiodothyronine), Free T4 (Thyroxine), Thyroid-Stimulating Hormone | 1 Thyroglobulin Antibodies | 1 Thyroid Peroxidase Antibodies |
| Hormones | 7 DHEA-Sulfate, Estradiol (E2), Follicle Stimulating Hormone (FSH), Luteinizing Hormone (LH), Prolactin, Sex Hormone Binding Globulin (SHBG), Total Testosterone | 3 Anti-Mullerian Hormone (AMH), Cortisol, Free Testosterone | 1 IGF-1 (Insulin-like Growth Factor 1) |
| Inflammation & Autoimmune | 1 High-Sensitivity C-Reactive Protein | 4 Anti-Nuclear Antibodies Pattern, Anti-Nuclear Antibodies Titer, Antinuclear Antibodies (ANA), Rheumatoid Factor | 1 ESR (Erythrocyte Sedimentation Rate) |
| Nutrients | 2 Homocysteine, Vitamin D (25-Hydroxy) | 8 Ferritin, Iron, Iron Saturation, Magnesium, Methylmalonic Acid, Selenium, Total Iron Binding Capacity, Zinc | 2 Folate, Vitamin B12 |
| Omega-3/6 | — | 9 Arachidonic Acid/EPA Ratio, Omega-3 DHA, Omega-3 DPA, Omega-3 EPA, Omega-3 Total, Omega-6 Arachidonic Acid, Omega-6 Linoleic Acid, Omega-6 Total, Omega-6/Omega-3 Ratio | — |
| Urinalysis | — | 19 Urine Amorphous Sediment, Urine Appearance, Urine Bacteria, Urine Bilirubin, Urine Blood, Urine Calcium Oxalate Crystals, Urine Color, Urine Glucose, Urine Hyaline Casts, Urine Ketones, Urine Leukocyte Esterase, Urine Nitrite, Urine pH, Urine Protein, Urine Red Blood Cells, Urine Specific Gravity, Urine Squamous Epithelial Cells, Urine White Blood Cells, Urine Yeast | — |
| Cancer Screening | 1 PSA Total | 2 PSA Free, PSA Percent Free | — |
| Heavy Metals | — | 2 Lead, Mercury | — |
| Other | — | 4 ABO Blood Group, Amylase, Biological Age, Lipase | — |
| Total | 50 shared | 64 of 114 | 9 of 59 |
These tables are accurate as of September 2026, when I last checked. Function changes its panel from time to time, so it's worth checking its current what's included page.
For a category-by-category walkthrough of every marker Function tests, see the full Function Health biomarker list.
Function Health cost
Function Health costs $365 per year, but discount codes can bring the price down to $315 (HUBERMAN). The cheapest price I've seen was the Function Day sale, which briefly offered two years for $499 before ending July 1.
Function was originally priced at $499 but reduced the price in late 2025, after Superpower and others undercut it. The pricing change wasn't without controversy: new Function members got $365, while existing members were told they'd keep paying $499. Early adopters were furious on Reddit about paying more than new sign-ups for the same panel. Function reversed course and extended the lower price, but some of its earliest supporters haven't forgotten it.
Is Function Health worth it?
Function Health is worth $365 for many people buying their first comprehensive baseline. It is less compelling for someone who already knows which few markers matter or needs diagnosis, treatment, and regular clinician access.
Rebuilding Function's panel through individual tests would cost about $1,114, so Function is still a good value but only modestly more expensive than Superpower ($349 standard) while remaining much pricier than Empirical Health ($190) and Vitals Vault Advanced ($199 one-time). The cheapest à la carte route is a discount lab, which we price out in Function Health vs DirtCheapLabs.
Read the complete Function Health value analysis for the test-by-test reconstruction, insurance methodology, and comparison with lower-priced alternatives.
Function Health lab locations
Function Health tests at Quest Diagnostics, which has over 2,000 lab locations across the US. You can schedule an appointment or just walk in to a location.
Function Health web dashboard
The Function Health web dashboard lets you view your results and explore each biomarker in detail. I like the clean and modern design, and the ability to see trends over time.
Function Health iPhone & Android apps
Function Health offers mobile apps for both iOS and Android. The apps mirror most of the web dashboard, letting you check results on the go. You can view trends over time and get notifications when new results are ready. The mobile experience is fine, though I find myself using the web version more often for deeper dives into the data.
Is Function Health covered by insurance?
Function Health does not bill insurance. Eligible members can use HSA or FSA funds. The self-pay membership makes the bill predictable, but whether it beats insured testing depends on your deductible, negotiated rates, medical indications, and which markers your clinician would otherwise order.
Function Health reviews
Function Health reviews are mostly positive. Users praise how much the panel covers and how clearly the dashboard presents it, and the service has a strong following in the health optimization and biohacking communities. The app carries a 4.9 average across more than 23,000 ratings on the Apple App Store as of August 2026.
Reviewers most often praise four things: the breadth (100+ biomarkers), the clean interface, advanced markers like ApoB and Lp(a), and the twice-yearly draw. Many say the best part is not having to talk a doctor into ordering these tests.
Common criticisms of Function include: the written clinician notes can feel generic, bringing in lab history from before you joined has long been painful (see the update above), and the price point is higher than newer competitors. Some users also wish they could customize which biomarkers to test.
Independent reviews show the same split. Positive reviewers value the breadth and sense of control; critical reviewers describe missing tests, difficult support, or recommendations that amount to familiar diet-and-exercise advice. The r/Function_Health subreddit is useful for unfiltered reports, although posts are anecdotal and often skew toward people with a problem to solve. I summarized recurring themes on the Function Health Reddit reviews page.
What health experts say about Function Health
Not all physicians are sold on the comprehensive testing approach. Some worry that casting a wide net with 100+ biomarkers can lead to false positives and unnecessary anxiety.
"I wouldn't want to pick up risk by just doing large numbers of tests. I'd rather line those up with what is a person clinically known to be at risk for."
On the other hand, some health influencers are strong advocates. Andrew Huberman, the Stanford neuroscientist behind the popular Huberman Lab podcast, is on Function's advisory board:
"Comprehensive lab testing like this is so important for health, and while I've been doing it for years, I've always found it to be overly complicated and expensive. I've been so impressed by Function — both at the level of ease of use that is getting the tests done, as well as how comprehensive and actionable the tests are — that I recently joined the advisory board."
Huberman has a financial relationship with Function, so weigh his endorsement accordingly. Physicians are genuinely split on whether testing 100+ markers helps everyone or is better reserved for people with known risk factors.
Function Health competitors
Direct-to-consumer blood testing has gotten a lot more crowded since Function launched in 2023. The main alternatives:
- Superpower ($349/year standard, sometimes lower on promotion): a similar biomarker panel for only a small discount versus Function. Newer and less proven, but still the closest product match to what Function sells.
- Empirical Health ($190/year): includes most of the same biomarkers but provides personalized guidance on medications, nutrition, and exercise.
- InsideTracker ($499/year): more established player with personalized recommendations. Higher price but more actionable insights.
- Marek Health ($350+/year): popular in the fitness community, offers hormone optimization focus.
- WHOOP Advanced Labs ($349/year): two annual draws covering 75+ biomarkers per panel, with results integrated into the WHOOP app alongside wearable data. Specialized one-off panels are available for $299 each.
- Vitals Vault ($99–$399 one-time): three Quest-based tiers covering 120–160+ reported biomarkers and calculated metrics, with clinician review, a published sample report, and biological-age scoring.
- Goodlabs (free with blood donation): different model entirely. Donate blood through a partner blood center and you get 100+ biomarkers covering heart, hormones, metabolic, inflammation, iron, kidney, liver, and nutrition, drawn at Quest or LabCorp. Only works if you're donor-eligible.
Each trades off biomarker selection, price, and follow-up support differently. Function's advantage is breadth plus Dr. Hyman's credibility. See our data-backed guide to the five best Function Health alternatives for normalized marker counts and tradeoffs. For a full head-to-head with its closest rival, see Function Health vs Superpower.
Function Health FAQ
Is Function Health worth it?
For most people, Function Health is worth it at $365/year. Rebuilding Function's panel one test at a time costs $1,114 at a direct-to-consumer lab, about 3 times the membership. The same lab work priced at 2026 Medicare rates comes to $644. Function also covers advanced markers like ApoB and Lp(a) that basic screening panels often omit. The main caveats are that the written clinician notes provided with my results were less actionable than a consultation, and alternatives like Superpower ($349 standard, with temporary promotions) and Empirical Health ($190) now overlap with much of the same ground.
Is Function Health legit?
Yes. Function Health is a legitimate company co-founded by Dr. Mark Hyman, who founded the Cleveland Clinic Center for Functional Medicine. It runs blood draws through Quest Diagnostics, reports more than 500,000 members, has raised over $800 million (valued at $2.5 billion at its November 2025 Series B), and has over 23,000 ratings on the Apple App Store. It is not a substitute for medical care: members receive written clinician notes, not an ongoing relationship with a treating physician.
What are the best Function Health alternatives?
The main alternatives are Empirical Health ($190/year), Superpower ($349/year standard, with some temporary promotions), InsideTracker ($499/year) for more established personalized guidance, Marek Health ($350+/year) for hormone optimization, WHOOP Advanced Labs ($349/year), Vitals Vault ($99–$399 one-time), and Goodlabs (free with blood donation).
How many biomarkers does Function Health test?
Function tests 100+ biomarkers at the initial annual draw and re-tests about 60 at a mid-year visit, which it markets as 160 biomarkers total. They span roughly 18 categories including heart, metabolic, thyroid, hormones, nutrients, liver, kidney, and cancer markers.
Does Function Health accept insurance?
No. Function Health does not bill insurance, but members can use eligible HSA or FSA funds. Whether it costs less than insured testing depends on your plan, deductible, medical indications, and which tests your clinician orders.
Function Health company and product updates
Function reports more than 500,000 members and has announced $53 million in Series A funding, a $298 million Series B at a $2.5 billion valuation, and $450 million in growth financing from General Catalyst's Customer Value Fund. In 2026 it also acquired at-home draw network Getlabs and supplement platform SuppCo.
Those figures signal substantial scale, but they do not establish clinical value. The product itself—its panel, results experience, and follow-up—is what drives this review's rating.
Recent Function Health features
The most relevant additions are Private AI Chat and Protocols, both still labeled beta in the app screenshots below. Function has also announced connectors for ChatGPT, Microsoft Copilot Health, and Perplexity Health. These tools can make results easier to explore, but their output should not be treated as diagnosis or individualized medical care.
