Function Health

Function Health was founded by Mark Hyman and offers 100+ biomarkers for $365 per year. 60 of the biomarkers are re-tested mid-year. Dr Hyman started the Cleveland Clinic's Functional Medicine program, and was made famous by The Katie Couric Show before starting Function.

I tried Function Health when they first launched. What appealed to me about Function was testing a bunch of advanced biomarkers like ApoB, Lp(a), particle sizes, hormones, and so on. The lack of gatekeeping was refreshing. I also liked the idea of getting the Grail multi-cancer test.

Here's what I think Function did well: the blood test report is attractive and well-designed, with nice colors. The pricing is cheaper than what I could get myself or from my doctor.

Where I think Function could improve is the follow up. The "clinician report" that you get is essentially written by ChatGPT, it recommends some supplements, but aside from that, there's not much. Function's mobile apps just let you view your results. You can't track results over time, since the feature to upload PDFs of previous blood tests doesn't trend.

Function's price of $365 is higher than newer alternatives, like Superpower ($199) and Empirical ($190). I thought Function was worth the money initially, but now there are competitors that are cheaper and offer more value.

Overall, Function Health is still a good option for those who want a comprehensive blood test. But they'll need to step up their game to stay competitive.

Recent updates from Function

Function has been busy in late 2025 and early 2026. The biggest moves:

• Medical Intelligence Lab (Nov 2025). Alongside its $298M Series B (led by Redpoint, $2.5B valuation), Function launched its Medical Intelligence Lab, a doctor-trained AI built on members' lab data, imaging, wearables, and medical records. The first member-facing pieces are a Private AI Chat (ask questions against your own results) and Protocols (step-by-step recommendations based on your data).
• AI connectors (Jan–Mar 2026). Function shipped a ChatGPT app in January, then announced integrations to securely connect member data with Microsoft Copilot Health and Perplexity Health. The pitch is that you can pull your Function results into whichever AI tool you already use.
• Sweetgreen partnership (Jan 6, 2026). Function and Sweetgreen launched a co-branded menu designed by Mark Hyman, featuring five bowls (Omega Salad, Nutrient Power Plate, Spicy Reset, Iron Boost, Steady Energy) with in-app ingredient explainers from Hyman. Sweetgreen loyalty members got $50 off a Function membership as part of the launch.
• Erewhon "World's Healthiest Smoothie?" (Feb 17, 2026). A year-long Erewhon collab: a $16, 20-ingredient smoothie (chocho-bean protein, MCT oil, creatine, BCAAs, wild blueberries, beet juice, etc.) aimed at microbiome, inflammation, blood sugar, and metabolic markers. Comes with $25 off Function for new members. On shelves through Feb 2027.

Function Health pricing

Function Health currently costs $365 per year, down from the original $499 price point. The price drop came as competitors like Superpower ($199) and Empirical Health ($190) entered the market with aggressive pricing.

However, the price change wasn't without controversy. When Function lowered the price for new members, they initially planned to keep charging existing members the original $499 rate. This sparked backlash on Reddit, where early adopters felt punished for their loyalty. Function eventually addressed the issue, but it left a sour taste for some of their original supporters.

Earlier this year, Function ran a promotion with the Chase Sapphire Reserve card that gave cardholders 50% cash back on a Function membership, effectively dropping the price to about $182.50. The offer expired on March 31, 2026, so it's no longer available, but it's worth watching for similar card-linked promotions in the future. If you have a Sapphire Reserve, check the Chase Offers section of your account periodically; Function has shown up there before. See the full breakdown on the Function × Chase Sapphire Reserve page.

Function Health locations

Function Health has over 2,000 lab locations across the US, mostly through Quest Diagnostics. You book your draw through the Function app or website and show up at the nearest Quest location. Coverage is solid in most metro areas, though rural availability can be hit or miss.

Function does twice-per-year testing

Function Health provides two comprehensive lab visits per year. The first annual test includes 100+ biomarkers, followed by a mid-year test with 60+ biomarkers to track changes and progress.

Function Health web dashboard

The Function Health web dashboard at functionhealth.com lets you view your results, explore each biomarker in detail, and access your health data from any browser. The interface is clean and modern, making complex biomarker data accessible. Honestly, it just looks a lot better than the built-in Quest report.

Function Health iPhone & Android apps

Function Health offers mobile apps for both iOS and Android. The apps mirror most of the web dashboard functionality, 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 solid, though I find myself using the web version more often for deeper dives into the data.

Is Function Health covered by insurance?

No. Function Health is not covered by insurance. Function operates entirely outside the insurance system: they don't bill your health plan, they don't accept Medicare or Medicaid, and they won't submit claims on your behalf. The $365/year membership is what you pay out of pocket, full stop.

Can I use HSA or FSA dollars? Yes. Function accepts HSA and FSA payments for the membership, so you can pay with pre-tax dollars even though insurance itself isn't involved.

What about the labs themselves? Many of the individual biomarkers Function tests — lipid panel, CBC, CMP, HbA1c, TSH, even some advanced markers like ApoB — are routinely covered by insurance when ordered by your primary care doctor with a qualifying diagnosis code. The trade-off is that you usually have to ask your doctor to order them, and they typically won't order the full 100+ marker panel that Function offers in a single visit.

Function Health discount codes

Here are working Function Health promo codes:

• HUBERMAN: $50 off your first year. Andrew Huberman is on Function's advisory board, and this is one of the most consistent codes available.
• EXCELLENCE25: $25 off your first year.

You can also get a discount through the referral program, where existing members can share a referral link that typically gives new users $25–$50 off. Function doesn't stack discounts, so pick whichever code gives you the best deal.

For the full set of currently-working codes, partner promos, and card-linked offers, see the dedicated Function Health discount codes page.

Function Health reviews

Function Health reviews are generally positive, with most users praising the comprehensiveness of the biomarker panel and the quality of the results dashboard. The service has a strong following among the health optimization and biohacking communities. The app has over 14,000 ratings on the Apple App Store.

Common praise includes: the breadth of testing (100+ biomarkers), the clean UI, the inclusion of advanced markers like ApoB and Lp(a), and the twice-yearly testing cadence. Many users appreciate not having to convince a doctor to order these tests.

Common criticisms include: the AI-generated clinician reports feel generic, there's no way to import historical lab data, and the price point is higher than newer competitors. Some users also wish they could customize which biomarkers to test.

On Trustpilot: "For literally a dollar a day. I got a full work up, and knew exactly what I needed to fix" and "The Clinician Summary goes waaaaaay beyond any typical feedback you get going to any doctor." Though not everyone has had a smooth experience: "You do not perform the tests you pay for. When we call your company to say that some of the tests were missing the automatic AI is a nightmare."

Blogger Dann Berg wrote: "I feel more empowered regarding my health than ever before", but also acknowledged that "ultimately, Function Health is just an expensive way to tell yourself: eat healthy and exercise more." Gene Food's John O'Connor gave Function an A- overall, noting: "Function Health is an excellent company" but recommending skipping the add-ons.

The r/Function_Health subreddit is also a good place to browse unfiltered user experiences, with discussions ranging from biomarker interpretation to customer service frustrations. I've pulled together the 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."

Worth noting that Huberman has a financial relationship with Function, so take his endorsement with that context in mind. Still, the broader point stands: opinions are divided on whether comprehensive testing is valuable for everyone or better reserved for those with known risk factors.

Function Health competitors

The direct-to-consumer blood testing space has gotten more competitive since Function launched. Here are the main alternatives:

• Superpower ($199/year): similar biomarker panel at a lower price point. Newer company but gaining traction.
• Empirical Health ($190/year): includes most of the same biomarkers but provides personalized guidance on medications, nutrition, and exercise.
• InsideTracker ($589+/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 65+ biomarkers, with results plumbed back into the WHOOP app alongside your wearable data. Specialized one-off panels (heart, metabolic, male/female hormones) available standalone at $299 each.
• Vitals Vault ($99–$399 one-time): pay-once model instead of a subscription. Three tiers (Essential $99, Advanced $199, Max $399) drawing from a 1,000+ test catalog at Quest, with a 90-page AI report and PhenoAge 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 has trade-offs in terms of biomarker selection, price, and follow-up support. Function's main advantage is the combination of breadth and Dr. Hyman's brand credibility.

Is Function Health worth it?

For most people, Function is worth it at $365/year. Function gives you 100+ biomarkers that would cost significantly more through a doctor or lab. It's especially valuable if you've never had comprehensive bloodwork done, since that first round can surface things like genetic Lp(a) elevation or early insulin resistance that a standard panel wouldn't catch. The main caveats are that the AI-generated clinician reports are surface-level and won't replace a real doctor's interpretation, and cheaper alternatives like Superpower ($199) or Empirical ($190) may make more sense for new members.

Function Health funding

Function Health has raised $350 million in total funding and is valued at $2.5 billion as of late 2025. The Series A was led by Andreessen Horowitz (a16z), and the Series B was led by Redpoint Ventures. The company reports nearly 50,000 paying members with a waitlist of over 200,000.