100 Healthy Years
Function membership helps you take control of your health with 160+ lab tests each year, personalized Protocols, and Private AI Chat—all backed by advanced science and your real data.
Built with top doctors, Function gives you the power to understand your body, track how it evolves, and make meaningful change.
160+ LAB TESTS
Membership includes testing for your heart, hormones, thyroid, liver, kidneys, toxins, nutrients, inflammation, autoimmunity, immunity and more.
ADVANCED MRI & CT SCANS
Detect early signs of cancer and hundreds of other potential conditions with the option to purchase advanced imaging for your brain, pancreas, liver, spine, ovaries, prostate, heart and much more.
PRIVATE AI CHAT
Ask questions about your results, identify meaningful patterns, and figure out where to focus next, with Private AI Chat—built in partnership with top clinicians.
CONNECT WEARABLES
Connect Apple Health and other health devices and wearables to see how your activity, sleep, and daily habits affect your lab test results and long-term health.
PROTOCOLS
Translate your lab results, scans and health history into clear, evidence-based plans for nutrition, activity, and supplements—all customizable to your goals and preferences.
UPLOAD HEALTH RECORDS
Upload past lab test results, scans, and other medical records for a more complete view of your health, all in one secure place.
PROGRESS YOU CAN SEE
Twice-yearly and On-Demand testing helps you track your results over time, monitor for early signs of disease, and identify where to focus next.
ADVANCED LAB TESTS
Membership includes 160+ lab tests, plus the option to purchase advanced On-Demand tests for:
- Detection of 50+ cancers
- Alzheimer’s risk detection
- MTHFR gene variants
- Advanced MRI and CT scans starting at $365
- Food allergies and sensitivities
- …and much more
ACCESSIBILITY
What could cost as much as $15,000 on your own is included with membership for just $365/year. Lab testing is available at over 2,000 lab locations across the US, with no insurance needed.
SECURITY
Function was built for privacy and security. Function is built to HIPAA standards. Your information is secure.
How it works:
1. Join Function and schedule your first set of lab tests.
2. Get your results and personalized Protocols. Ask questions with your Private AI Chat.
3. See your progress with 60+ lab tests at your Mid-Year Test.
4. Purchase MRI or CT scans and other advanced On-Demand Tests any time.
DISCLAIMER
Function Health is a technology company and not a laboratory or medical provider. All laboratory and medical services are provided by independent third parties. Function Health does not offer medical advice, laboratory services, a diagnosis, medical treatment, or any form of a medical opinion; its services are not a substitute for medical care, medical advice, and/or a detailed discussion with a physician or other licensed provider. If you have any questions regarding any laboratory results or any other information that you access through Function Health, you should contact a physician or other licensed provider. All material, information, data, and content that Function Health provides is strictly for general information purposes. For additional important information: https:// www.functionhealth.com/terms-of-service.
I expected good information from Function Health, but sometimes good information is just information - clutter even - without the support to actually understand the meaning, and what you can do about it. The descriptions in every category, the clinician summary and ai chat have been very helpful in informing, but also the helping me understand what it means and what I can do about it part. I think it does help to be a passionate health person who’s committed to taking responsibility and doing your part. If I didn’t have passion driving me, and curiosity in asking the ai what certain parts of my results mean/what I can do about it, I think I would have less value here. You have to do your part! And if you’re willing to do that, this is so worth it!
No support available beyond a bot. Don’t provide clear results to tests.
Apple123457890
I bought some additional tests (genetic) as well as their basic panel. 1. They don’t provide a receipt that you can submit to insurance. Mine was rejected because it didn’t have the correct documentation. Impossible to get this fixed because of complaint #3. 2. There is no way to determine what blood test result is for which panel ordered. For months now I have asked for a way to know this and they said come back when we are open. Now they are telling me they are too busy and will email me. When? Who knows. It’s a total scam. They don’t have people working from them. It’s all automated and if the bot can’t answer the question there is no one else available to help. I spent a few thousand dollars on a test and haven’t been able to get clear results for it. 3. Trying to schedule appointments is very difficult if you add any extra tests onto your panel. You have to do a blood test visit for each thing you order on different days. 4. You have to go to the medical request form in the receipts section to find out what date the displayed bloodwork was measured on. The app just shows a level per test number. When you need the blood tests for other things they need the date of the panel. I’m not in the medical field reading the lab documents is very confusing. Don’t use this product! It’s a complete ripoff.
Developer Response
We're truly sorry for the frustration this has caused. Clear communication is a priority for us, and it’s apparent we missed the mark here. We’d love the opportunity to make things right—please reach out to our team at hello@functionhealth.com so we can assist you further.
I was surprised and disappointed by Function’s renewal and refund practices.
Greg R M
Function seemed like a good service, but I don’t like how they run the membership system, so it leaves me questioning the good intentions of everything else they do. I was especially upset when they automatically renewed my yearly membership for $499 on Sep 22: when I realized what they had done, I asked to cancel on Oct 9 (only 17 days later), but Function kept $169 of that membership fee, stating it was to “help support the systems, resources, and member services”. Seriously? I booked no testing for this renewal year, and I imagine that the renewal itself was automated, but if not, I can’t imagine that the renewal and charging of my card cost Function $169 worth of anyone’s time. What made it worse was that I wasn’t told what the refund would be until after I cancelled. They’re taking advantage of a lack of transparency and it’s going to come back and bite them. I’ll be looking for a better service that’s more straightforwardly fee-for-service, with none of these unreasonable hidden-in-the-fine print fees.
Developer Response
Hi Greg, Function membership is an annual subscription which renews automatically each year. We apologize for the frustration this caused and hear your feedback around billing and transparency. We’ve shared your comments with our team. If you’d like us to take a closer look at your membership and refund details, our team is here to help at hello@functionhealth.com.
Please change the range display! It’s misleading
QuantumPast
The app is great. The product is eye opening as well. However the most misleading part is that the ranges shown on the charts are from the laboratory, which function health says is inherently unhealthy benchmark. The explanation for each biomarker provides the optimal range recommended by the doctors based on medical literature. Why can’t you show the optimal ranges in the range charts as well as the landing page? After all, that’s what we are really after: the recommendations from Mark & team, not the recommendations from quest diagnostics! The current rendering of the ranges gives a false sense of security that all is well, when upon a careful read of the explanation (summary) turns out to be way off the optimal range.It’s impossible to read through the summary of every biomarker to identify which ones are truly out of optimal range vs which ones aren’t.
Developer Response
Thank you for sharing your thoughtful feedback regarding optimal ranges—we truly appreciate it. Feedback like yours helps us prioritize future product enhancements and continue improving the Function member experience.
This update includes:
• UX improvements and bug fixes
Version 1.21.0
The developer, Function Health, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Location
Identifiers
Usage Data
Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More