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.
Scheduling/calendar for women is GARBAGE
V Edmondson
The scheduling ability for menstruating women is awful. Some tests have to be scheduled within certain number of days of the beginning of the menstrual cycle but function will block it off, eg. my period starts on the 10th I have to schedule a test on day 2-4 of my cycle but functions scheduling calendar will not allow me to schedule until the 18th. That’s not how math works, 2-4 days after the 10th is the 12th-14th. Other tests have to be scheduled within 19-21 days of the last period but I can’t put that my period started on the 10th if it’s the 11th. To make things worse, you can’t call them you have to go back and forth with their chat agents and you spend hours trying to get tests scheduled. I spent an entire day trying to get scheduled but at a certain point the chat agent stopped responding I’m guessing it was the end of their day. Eventually I just “tricked” the calendar to schedule a test understanding the limitations but I don’t even know if I’m scheduled for the right tests which is concerning considering the cost of all the additional tests. At this point it’s not worth the money and after this year I’ll be going to my primary care doctor for tests. Their scheduling ability is GARBAGE!
Developer Response
We're sorry to hear about the trouble scheduling your lab visit, especially with tests that need to line up with your cycle. That's not the experience we want, and we'd like to make sure you're booked for the right tests. Please reach out to us at hello@functionhealth.com, and our team can take a closer look with you.
Flawed app scheduling and poor customer service
MillieM12
I am extremely disappointed with the lack of common sense in Function Health’s app and their subsequent customer support.I paid for a membership plus several add-ons. Because the lab couldn't process all my tests in one go, the app prompted me to schedule another draw. However, instead of simply scheduling the missing tests I had already paid for, the app forced me to trigger my "mid-year" testing credit—only two weeks after my initial draw.When I reached out to customer service to explain that I shouldn't have to burn my mid-year test just to complete my initial order, they refused to credit me back. Now, I’m effectively out of the mid-year testing I paid for because of a technicality in their scheduling flow.For a company that prides itself on being "data-driven" and "high-tech," their system is surprisingly rigid and their support is unwilling to fix clear logistical errors. Due to their refusal to resolve this and provide the credits I am entitled to, I will be filing a formal complaint with the Better Business Bureau. I wouldn't recommend this if you expect any kind of fair treatment when their tech glitches.
Developer Response
We're sorry for the frustration, this is not the experience we aim to provide. We take feedback like yours seriously, and we'd love the opportunity to look into your experience further. Please reach out to us at hello@functionhealth.com and mention this review so our team can assist you directly.
UX improvements and bug fixes
Version 1.40.0
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