Honesty, pricing, process and quality scores appear once 5 customers have rated them.
About Function Health
Function gives you access to 160+ yearly lab tests—5x more than a typical annual physical—covering everything from heart, hormones, thyroid, liver, kidneys, heavy metals, nutrients, inflammation, and more, plus actionable insights from top doctors. All results are stored in one place, making it easy to spot trends, track progress, and take action.
Function Health (functionhealth.com) has 3,039 customer reviews on Folks Told, with an average rating of 4.4 out of 5.
After several weeks, of hearing nothing, I finally got my results. I guess I was ecpecting more.
Reply from Function HealthFeb 24, 2026
Thank you for sharing this, Joe. We’re sorry the wait felt longer than expected—and that the results didn’t meet what you were hoping for. Your input helps guide what we improve next.
CD
Christine D O.
The test results are great
The test results are great. The summaries are fine. But now what do I do? Just eat off of the do list and avoid the don't list? Same with the supplements? All at once? Ease into it?
If I have insulin resistance and need to watch my sugars, how do I do that while keeping my cholesterol down? Lots of food items work against these two areas. What about my low hormones? What can I do about that? My regular doctors wants me on synthetic pills, that's why I went through you. I guess I need a bit of simplification or some sort of plan to work through.
Reply from Function HealthFeb 16, 2026
We hear you, Christine. We’re continually refining Function to make it more personal, clearer, and easier to use.
If you would like to share more about your experience, please contact [email protected].
KE
Kevin
Good info but lacked interactive guidance
I am glad I used this through the black Friday sale. I shared all the info with my GP, cardiologist, nephrologist, VA doc, and some medical research friends. They all said a lot of info and they thought it was good info especially at the lower price, but not at full price. Aside from a couple of tweaks, not much was changed. I will be cancelling the subscription.
Reply from Function HealthFeb 16, 2026
Thank you for taking the time to share your experience. We’re always learning from our members and will use your feedback to keep improving.
CA
Cori A.
So, what am I supposed to do next?
I like seeing all of my results and knowing what I am at risk for. However, what do I do now that I know my results? That's what's lacking in this service.
Reply from Function HealthFeb 16, 2026
We’re glad you found value in seeing your results and understanding potential risks. We also hear you — knowing what to do next is an important part of the experience.
We’ve reached out to you directly to provide more information about what’s included in membership and what you can expect after receiving your results. We look forward to connecting there.
AS
AS
Read exactly what is being tested!
First, FunctionHealth makes things easy to schedule and the results are very informative and easy to read. I was shocked at the second blood test results though because I assumed everything was retested or at least areas of concern. The second blood draw was just a smaller number of tests and for me personally, none of these were in the areas I was concerned about based on the first results.
Reply from Function HealthFeb 16, 2026
We hear you and really appreciate your honesty. Our goal is to make Function as valuable and personalized as possible, and your perspective helps us get there.
We’ve sent you an email with more information about how follow-up visits work and how markers are selected. We look forward to connecting there and supporting you further.
MA
María del P.
I was expecting that in the follow up…
I was expecting that in the follow up exams they include the markers in which we have bad results but not. So in my particular case the follow up was not useful to evaluate my health because I don’t know if my values improve or not for the markers I had bad results in the first exams. And if you want to include the markers you should pay more so at the end I couldn’t see the long term benefit.
Reply from Function HealthFeb 16, 2026
We hear you and really appreciate your honesty. Our goal is to make Function as valuable and personalized as possible, and your perspective helps us get there.
We’ve sent you an email with more information about how follow-up visits work and how markers are selected. We look forward to connecting there and supporting you further.
CU
customer
I had some snafu's scheduling and some…
I had some snafu's scheduling and some of the advice seems canned / AI generated.
Reply from Function HealthFeb 13, 2026
We appreciate your honest feedback. Please reach out to our team at [email protected] if we can answer any additional questions or address your concerns further.
IA
Ian
Good prices, waiting to see how they grow as a company
Good price for the tests and attractive interface. I have generally been frustrated about some of their policies like taking away the ability to have lab results uploaded to My Quest as well as Function which limits our access and what we are able to control about our data as Quest supports API functionality, though Function does not. There may be security concerns as Function claims, though with both Quest and Function being HIPAA, I don't really see it. All they can really say is having our results available in more than one place is less security, but many of us want the ability to use the Quest API to easily sync our results with other systems. Maybe that is less secure, but it is done by our own choice and hopefully we are choosing secure systems. We download our PDF's and share them wherever we want so all Function is doing is making it harder to use our data outside of their system. Almost every blood testing organization allows for API syncing, so function is an outlier on this decision though they are new and still developing. I want to like function, though I wish they would allow us to continue to get our data in My Quest while they continue to develop their product. It took me months of messaging them about this to finally get an answer that didn't feel like I was just being brushed off. I appreciate that I finally got a better answer, but wish it hadn't required so many messages to get a better answer.
"Thank you for sharing your perspective so candidly. I hear your frustration, and I want to acknowledge how strongly you feel about having control over your own health data.
You’re absolutely right that both Quest and Function operate under HIPAA regulations, and your feedback about data access, flexibility, and trust is valid. Our current approach isn’t intended to limit your autonomy or discourage the use of external tools, but rather reflects how our platform is structured today around data security, compliance, and consistency of results delivery. That said, we understand how this can feel restrictive, and we recognize that ease of access is an important part of the member experience.
While you can download and use your results PDFs as you choose, I understand your point that this may not feel like the most seamless or empowering option. Feedback like yours is important, and we do share concerns like this internally with the teams responsible for platform decisions and future improvements.
We genuinely appreciate you taking the time to explain how this impacts your trust and willingness to continue with Function. If you’re open to it, I’m happy to pass your feedback along so it’s heard by the appropriate team."
Reply from Function HealthFeb 10, 2026
Thank you for taking the time to share your experience. We’re always learning from our members and will use your feedback to keep improving.