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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Lori
Overall a good experience with function.
Response from Function HealthJul 26, 2026
Thank you for your feedback, Lori! We're so glad to hear you've had a good experience with Function. We truly appreciate you taking the time to share your feedback and are grateful for your support.
Scott
The whole process works efficiently and effectively.
Response from Function HealthJul 26, 2026
Thank you for your feedback, Scott! We're so glad to hear the process has been efficient and effective for you. We truly appreciate you taking the time to share your experience.
Tristin G.
A very thorough set of tests with excellent graphical presentation and helpful clinician notes. I would have given it five stars, but there is no easy way to download or share the graphical reports and clinician notes with your physician. While the raw lab results can be exported, the charts and clinical interpretations cannot, making it more cumbersome than it should be to share the complete report with your healthcare team.
Response from Function HealthJul 26, 2026
Thank you for sharing your thoughtful feedback, Tristin. We're so glad to hear you found the testing, visualizations, and clinician notes valuable. We also appreciate your suggestion about making it easier to download and share charts and clinician notes with your physician. Feedback like yours helps us continue improving the member experience, and we're grateful you took the time to share it.
Jason D.
Everything was fast and courteous, with tons of helpful information.
Response from Function HealthJul 26, 2026
Thank you for your kind words, Jason! We're so glad to hear your experience was fast, courteous, and informative. We truly appreciate you taking the time to share your feedback.
Brendon
Using Function Health was the best experience getting bloodwork. It was easy to sign up, request bloodwork and the level of detail was outstanding. We are now implementing recommendations and will retest in the next 8-12 weeks. The only difficulties have been finding availability with Quest Diagnostics and downloading reports is a bit difficult.
Response from Function HealthJul 26, 2026
Thank you for sharing your experience, Brendon! We're so glad to hear you found the process easy and the insights valuable. It's wonderful to know you're already putting the recommendations into practice. We also appreciate your feedback about Quest availability and downloading reports. Feedback like yours helps us continue improving the member experience. Thank you for taking the time to share it.
George
My first experience (last year) was excellent. This year you failed to update your data base and provided me results and summary that was incorrect because of using last year’s lab results and body weight. It was extremely frustrating communicating with your AI chat. It took several try’s and emails to get the issue resolved. The likelihood of me and my wife being a repeat customers is very slim.
Response from Function HealthJul 21, 2026
Thank you for taking the time to share your feedback, George. We’re sorry to hear about your experience. Our team is looking into your concerns and will be reaching out to you directly shortly to better understand what happened and assist further. We appreciate you bringing this to our attention.
Christoph L.
They said 160+ biomarkers but tested only 122. app doesn‘t work most of the time. Lab appointment went smooth.
Response from Function HealthJul 21, 2026
Thank you for sharing your feedback, Christoph. We understand your concerns. Function membership includes two rounds of testing, with approximately 100 biomarkers in the first round and around 60 additional biomarkers in the second. We also appreciate your feedback about the app experience, and it helps guide what we improve next.
Lisa B.
I am learning about areas of my health that “normal” tests do not provide. Many physicians don’t go to this depth in their testing and reporting. Thank you Function Health.
Response from Function HealthJul 26, 2026
Thank you for your kind words, Lisa! We're so glad to hear you've found the insights valuable and that they've helped you learn more about your health. We truly appreciate you taking the time to share your experience and your feedback.
