Great
Based on 3,039 reviews
Function Health4.4Honesty, pricing, process and quality scores appear once 5 customers have rated them.
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.
3,039 approved reviews, newest moderated first
Jerry
The entire process was smooth and well coordinated
Reply from Function HealthJan 2, 2026
We’re glad to hear that your experience was smooth and well coordinated. We appreciate you being part of the Function Health community.
Krista S.
It was very helpful to get such comprehensive testing done. The feedback and suggestions I got were very helpful. I look forward to tracking my results every year. The main feedback I have is that I wish the results used the optimal ranges instead of standard. I had to go through every result that was In Range and look up the optimal # to see if it was optimal. I feel like most people using Function care about optimal numbers, not standard. I don't want to be average.
Lisa S.
Excellent resource and value to take a deep dive into your biomarkers and the information regarding results. My standard of care doctors were very impressed with the information.
James W.
I think the value and data provided were a great investment in my health. The limitations in testing sites available was a bit of a struggle as I had to drive over an hour away to the closest location. Other than that, the platform, app, and physician recommendations have been helpful in making changes to my current diet & supplement regime. I'm looking forward to seeing my next set of labs to gauge my progress.
Annette R.
Wonderful service to take charge of your health! Easy scheduling, in-depth feedback and great tracking of changes in the biomarkers. I will be staying a member for sure!
John David K.
I was thrilled to find FunctionHealth initially. I did the first round of testing - as promised over 100 tests. According to their website and marketing, the second round (mid year) of tests promised to "compare with past results to monitor changes." That statement implies, at the very least, to test any markers that were considered out-of-range - in my case I had 17. Well, FunctionHealth would only retest 4. How is someone supposed to compare with past results if you don't test again? Absolute bait-and-switch. I had a long email exchange with them and they refused to 1) make good on their promise to "test past results", 2) provide me a refund or 3) after canceling my membership over a month ago, I still have access to the site and am getting emails from them - which leads me to believe that they haven't cancelled and I will be charged again when my subscription is due. I'm 58 and and very interested in extending and improving my "health span" - but FunctionHealth, while incredibly promising, fails at delivering upon their promise. I feel absolutely ripped off.
Reply from Function HealthNov 1, 2025
We’re sorry to hear your experience did not meet expectations and appreciate you sharing your feedback. The Mid Year set of tests included in membership retests 60+ of the 100+ biomarkers initially tested in the Yearly. Our team of clinicians recommend testing these 60+ biomarkers every 6 months as they are the most likely to be influenced by change during that timeframe. You can see the full list of included Mid Year biomarkers on our website, marked by a 2x: https://www.functionhealth.com/whats-included. We have shared your feedback with our team, and have been in touch via email to confirm details of your cancellation request. Please let us know there if you have additional questions.
Susan A.
I gifted myself Function unknowingly to test my hormones and thyroid labs. The simple ANA test came back abnormal which led me to order the full rheumatological panel. I did not have time to wait for my insurance- I wanted something on demand, fast, and accurate. Function helped me uncover that I had not one- but three underlying chronic conditions. I took my results to my doctor and got the care that I begged for all those years that I felt tired, anxious, sleepless, and confused. Performing my own research on how to combat my conditions with nutrition, supplementation, and other therapies, I reversed my conditions. I retested myself months later and my inflammatory markers are nowhere to be seen. I later found out that my conditions increased the chances of lymphoma by sixteen times as I had two loved ones pass from hematological cancers. Also, I discovered that I have malabsorption due to my polyautoimmunity and began to supplement with lipidized nutrients, polypeptides, MCTs, and nutrients that cross the blood brain barrier. I’m not exaggerating but I got my childhood memories back. My function journey started a month before my clinical rotations and I am proud to say that what I gained from Function helped me test and diagnose patients at the clinic. I recently graduated and will be taking my board certification exam in 2 weeks. I will also pursue becoming a certified practitioner with the Institute of Functional Medicine. I went from patient, to student, and will become a provider. God is good. Thank you Function Health.
Rob B.
Function health is a great tool to use for getting your health on track and maintaining a superb healthy future. The blood results with optimum ranges and recommendations if out of range is outstanding!
