Function Health

Function Health offers 100+ biomarkers for $365 per year, with 60 re-tested mid-year. It covers advanced markers like ApoB and Lp(a) that most doctors won't order. Function was founded by Mark Hyman, who 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.

Below I cover Function's pricing and discount codes, what's included in the blood test, the dashboard and apps, insurance and HSA/FSA, what reviewers and health experts say, and how Function compares to alternatives like Superpower and Empirical Health.

Function Health cost

Function Health costs $365 per year, although discount codes can bring it down to $315 (HUBERMAN) or $340 (EXCELLENCE25). The "Function Day" sale briefly offered two years for $499 (about $250 per year, down from $730), but it ended July 1, 2026, so HUBERMAN is now the best standing discount. See how to get Function Health at a lower costand Function Health discount codes for the full details. In late 2025, Function lowered their price to $365 from the original $499 due to increased competition. 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.

Function Day sale: 2 years for $499 (ended July 1, 2026)

From June 23 to July 1, 2026, Function ran a "Function Day" promotion: two years of membership for $499, which reduced the effective price from $365 to about $250 per year. It has since ended. See Function Health discount codes for how it compared to the usual promo codes.

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 does twice-per-year testing

Function Health provides two 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 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 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 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 accept insurance. However, you can use HSA or FSA dollars to pay for a Function membership. Given that the labs themselves can cost thousands of dollars through insurance, I think a Function Health membership is a good value.

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 of Function is that it has a breadth of testing (100+ biomarkers), a clean UI, includes advanced markers like ApoB and Lp(a), and has a twice-yearly testing cadence. Many users appreciate not having to convince a doctor to order these tests.

Common criticisms of Function 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 FAQ

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.

Function Health new features in 2025-2026

Alongside Function's $298M Series B, they launched a medical intelligence lab, AI connectors, and a smoothie:Medical Intelligence Lab in November 2025, a doctor-trained AI built on members' lab data, imaging, wearables, and medical records, with member-facing Private AI Chat and Protocols. From January to March 2026 it shipped a ChatGPT app and announced AI connectors to securely link member data with Microsoft Copilot Health and Perplexity Health, so you can pull your results into whichever AI tool you use. On the consumer-marketing side, it launched a co-branded Sweetgreen menu designed by Mark Hyman (Jan 6, 2026, with $50 off for Sweetgreen loyalty members) and a year-long Erewhon "World's Healthiest Smoothie?" collab (Feb 17, 2026, a $16, 20-ingredient smoothie on shelves through Feb 2027, with $25 off for new members).