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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Kay
Amazing value for screenings and informative app to equip me to feel more in control of my own health journey. Just returned from doctor visit and she’s so pleased with progress I’ve been able to make with Function Health.
Response from Function HealthSep 22, 2026
Thank you for your thoughtful feedback. We’re glad Function has helped you better understand your health and feel more prepared when speaking with your doctor. We appreciate your trust in Function.
Julie M.
Great value and picked up on things never tested by my doctor. Had high homocysteine and hs-crp. Improved with supplementation and found out I had a methylation problem which I tested with an add on. Can really educate yourself, such as the difference between folic acid(in average multivitamin), folate(in food), and methylated folate which is best.
Response from Function HealthSep 22, 2026
Thank you for your thoughtful feedback. We’re so glad the breadth of insights has helped you feel more informed about your health. We appreciate you taking the time to share your experience.
Carlos
Everything was so smooth. I like the extensive biomarkers in the testing. Very complete. The staff at the blood drawing clinic was very professional. Value for the money.
Response from Function HealthSep 22, 2026
Thank you for your kind words. We’re so glad you had a smooth experience and found the breadth of testing valuable. We appreciate you taking the time to share your feedback.
JAY
The test found health problems that could have spiraled out of control, but because of these tests I caught and reversed them.
Response from Function HealthSep 21, 2026
Thank you for your thoughtful feedback. We’re so glad the results provided valuable insights and helped you become more informed about your health. We appreciate your trust in Function.
Deb
Great experience and excellent service!
Response from Function HealthSep 19, 2026
Thank you for sharing your experience, Deb. We’re glad to hear you had a great experience with Function and our service.
Nic
This was the best investment in my heath. For some one without health insurance I know know where my health stands. What a relief. Its was has been way more informative then I was expecting too. Helping me to understand my numbers. Also excited to put in my supplements to see how I can continue to better my health
Response from Function HealthSep 19, 2026
Thank you for sharing your experience, Nic. We’re glad you’ve found the information helpful in understanding your health data and feel more informed about your results.
Cheryl
Sign up was easy. The instructions were easy to follow for getting the blood work done. Results came back more quickly than expected. It was great to see the full picture plus I added on food sensitivities. My doctor and endocrinologist order the minimum tests- like they were paying for it. Thank you.
Response from Function HealthSep 17, 2026
Thank you for your thoughtful review. We’re glad the process was smooth and that you found the results and additional testing valuable. We truly appreciate your support.
Roman
Function Health is amazing and I only wish I knew about it sooner so that I could’ve got my biomarker data earlier and made more informed decisions for my health earlier on. Oh well, the best time to start is NOW!
Response from Function HealthSep 17, 2026
Thank you for sharing your experience. We’re glad the insights have helped you better understand your health and make more informed decisions. We truly appreciate your support.
