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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Ray
The blood draw was quick and painless. When we got our results, there is good supporting information to go with the data points and allows me to make adjustments to increase my health.
Response from Function HealthAug 9, 2026
Thank you for your kind words. We’re so glad you had a positive testing experience and found the results and supporting information valuable. We appreciate you sharing your experience.
NM
Scheduling testing was very easy, results were returned quickly and recommendations and explanations were easy to understand and implement. Everyone should try Function Health to get a deeper insight into their health!
Response from Function HealthAug 9, 2026
Thank you for taking the time to share your thoughtful feedback. We’re pleased to hear the testing process was smooth and that the results were easy to understand. We appreciate your recommendation.
Tricia H.
I appreciate the test results come back quickly and how Function ties it all together. I wish the 6month follow up contained all the labs I need to retest vs having to add them on at additional cost. The MRI scan lab was very professional and the bag, socks, Jammie’s were a nice treat!
Response from Function HealthAug 9, 2026
Thank you for your thoughtful review. We’re glad you found value in the testing experience and enjoyed the MRI visit. We appreciate your feedback about mid-year retesting and will take it into consideration as we continue improving Function.
Chris
Quest appt was quick and easy. Results came back quickly, and with great insight per result.
Response from Function HealthAug 9, 2026
Thank you for taking the time to share your thoughtful feedback. We’re pleased to hear your lab visit went smoothly and that the results provided meaningful insights. We appreciate your support.
Deborah
Results came in quickly. Summary followed almost immediately and was extremely helpful. I love the ability to generate protocols. Will definitely renew for year 3.
Response from Function HealthAug 9, 2026
We’re thrilled you’re finding value in Function. Thank you for sharing your experience and for trusting us with your health. We look forward to supporting you in year three.
Stewart J.
I've done the first round of testing, and I've found it valuable and worth the cost. The site's explanations of what is tested and what the results mean is pretty good. I was disappointed to find, however, that proposed battery of tests for the second round takes no account of what was out of range in the first round. I'd have expected that the out of range results are exactly what follow-up tested would target.
Response from Function HealthAug 1, 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.
Barb G.
It is easy informative and it allows for personal adaptations to optimize health. The only criticism I have is all the added test options which are unclear if they would really benefit me. It adds a lot of costs chosing them.
Response from Function HealthAug 9, 2026
Barb, we’re glad you’ve found Function easy and informative. We also hear your feedback about wanting more clarity around which additional testing options may be relevant to you. We appreciate your perspective and will keep it in mind as we continue improving the member experience.
Kim
Comprehensive testing and clinical notes! Function Health made lab testing easy. Results were easy to interpret. Clinical notes were comprehensive. I had a little difficulty downloading information on my phone. I expect that had more to do with the user than the interface. ;-) All-in-all, I had a terrific experience!
Response from Function HealthAug 9, 2026
Thank you for sharing, Kim. We’re glad the lab process was easy and that you found your results and Clinician Notes clear and comprehensive. We appreciate the thoughtful feedback and are happy you had such a great experience!
