Function HealthFunction 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 Five Star Index, with an average rating of 4.4 out of 5.
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Leah
This blood work is very thorough. It helped me figure out exactly what kind of support my body needs right now!
Response from Function HealthAug 14, 2026
Thank you for sharing, Leah. We’re glad the breadth of testing gave you helpful insights into your health and areas to focus on. We appreciate the kind words!
Mrs A.
Becoming a member of Function Health is the best thing I could’ve done for my health… a step forward in being more educated and proactive about preventative and needed care. The entire process was professional and simple, as well as affordable. I HIGHLY recommend everyone to become a member.
Response from Function HealthAug 14, 2026
Thank you for the kind words, Mrs Attias. We’re glad Function is helping you feel more informed and engaged with your health, and that the experience has been simple and valuable. We truly appreciate your recommendation!
Eric
In-depth, fast analytical feed back, great app, awesome customer support etc, definitely recommend.
Response from Function HealthAug 14, 2026
Thank you for the kind words, Eric. We’re glad you’ve enjoyed the app, timely insights, and support from our team. We truly appreciate your recommendation!
Lillian
A few years ago, I asked my GP to run more specific tests to find out why I wasn't feeling well. When he told me he could not because of "policies," I found a Functional Medicine doctor to do the testing. Now that I have a diagnosis, I find that my Functional Medicine doctor has no interest in finding the "root cause." Functional Health has helped me to be better informed with details regarding my health so I can make better decisions regarding my care for my health and wellness journey.
Response from Function HealthAug 14, 2026
Thank you for sharing your experience, Lillian. We’re glad Function has given you access to detailed information that helps you better understand your health and make more informed decisions with your care team. We appreciate having you with us!
Toni
Have been following Dr. Mark Hyman for about 15years. I have bought all of his books and have followed his advice - which has helped me regain my health in several areas. So, this just seemed the natural next step. Thank you for this wonderful, informative service. You ALL are - TRULY A BLESSING!!
Response from Function HealthAug 14, 2026
Toni, thank you for the incredibly kind words. We’re so glad Function felt like a natural next step for you and that you’re finding the experience informative and valuable. We’re grateful to have you with us!
Madan
The overall value proposition is great. The signup was easy and also the tests. The clinical notes post were very helpful and were very actionable. Highly recommended.
Response from Function HealthAug 14, 2026
Thank you for sharing, Madan. We’re glad the experience was easy and that your Clinician Notes provided clear, actionable insights. We truly appreciate your recommendation!
John
Other than being very expensive, I felt I could use the information to make important and necessary changes to my health. Would be nice to have a bit more clarity on all the testing options, maybe something like, "You're 60+ worried about cholesterol, overweight (BMI > x%) so these tests might be useful." Not sure what would be best, but by checking boxes off initially, and having suggested tests come up that way, might be helpful.
Response from Function HealthAug 13, 2026
Thank you for sharing your experience. We’re pleased to hear the information has been helpful. We appreciate your thoughtful suggestion about making testing options easier to navigate, and it helps us continue improving Function.
Mary
I love being proactive with my health and Function Health is very helpful with this. I feel it is a very good value for the money too.
Response from Function HealthAug 14, 2026
Thank you for sharing, Mary. We’re glad Function is helping you stay informed and engaged with your health, and that you’re finding great value in your membership. We appreciate having you with us!
