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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customer
Thank you for your clinical notes and guidance to better health!
Response from Function HealthAug 2, 2026
Thank you for your kind words. We're so glad to hear you found the clinician notes helpful and that the insights have been valuable. We appreciate you trusting Function with your health.
Gary
Like everything but the volatility of biological age calculation when bloodwork results barely changed and/or improved. Better to level it out from test to test.
Response from Function HealthJul 25, 2026
Thank you for taking the time to share your feedback, Gary. We're glad to hear you've had a positive experience overall. We also appreciate your thoughts on the biological age calculation and understand your perspective. Feedback like yours helps us continue improving the member experience, and we're grateful you took the time to share it.
Mama
I have been a member of Function Health for three years plus. It has helped me in many many ways. About six months ago when I had my labs done my biological age had increased seven years in a seven month span. really really scared me. made me dive deep into what was going on. Function Health helped me to find ways to improve my health and what to ask my doctor for. last month, I had my labs done, and my biological age went right back to where it was, which means I fixed my problem. I could not have done that with normal labs doctors would prescribe to me. I am so thankful I have Function Health.
Response from Function HealthAug 2, 2026
Thank you for taking the time to share your experience. We're so glad to hear you've found value in your membership over the past three years and that tracking your results over time has helped you have informed conversations with your doctor. Thank you for trusting Function with your health, and we appreciate you sharing your story.
Suraj K.
I’ve had a generally positive experience with Function. The appointment process was smooth, the medical team was great, and the app is well-designed and easy to use. However, I was disappointed by the gap between what was promised and what was actually delivered regarding biomarkers. The program was marketed as offering 165+ biomarkers, but only around 120 were included in my testing. That difference feels significant and should be communicated more clearly upfront. I also expected the AI functionality to be more actionable. For example, it would be helpful if recommendations could automatically translate into a shopping cart or purchase list through pharmacies or retailers, rather than requiring users to manually search for each supplement or product. Overall, the service and app experience are good, but the biomarker coverage and practical AI-driven recommendations did not fully meet my expectations. There is definitely room for improvement.
Response from Function HealthJul 25, 2026
Thank you for taking the time to share your thoughtful feedback, Suraj. We're glad to hear you had a positive experience with the appointment process, our medical team, and the app. We're sorry to hear other aspects of the experience didn't fully meet your expectations. We appreciate your feedback regarding biomarker coverage and AI features, and it helps us identify where we can improve. If you'd like to discuss your experience further, please reach out to us at [email protected]
Virginia L.
It was more extensive than my doctor. The analysis was very informative and well put together. The recommendations were appropriate.
Response from Function HealthAug 2, 2026
Thank you for taking the time to share your experience, Virginia. We're so glad to hear you found the analysis detailed, informative, and helpful. We appreciate your kind words and thank you for trusting Function with your health.
KEI L.
Very fairly priced annual membership that includes comprehensive bloodwork twice a year. The follow up report is very detailed and incredibly helpful in understanding what is going on in your body.
Response from Function HealthAug 2, 2026
Thank you for taking the time to share your experience, Kei. We're so glad to hear you've found value in your membership, the detailed clinician report, and the insights provided through your results. We appreciate you trusting Function with your health.
Tara
Gives you so much information. It really breaks it down so you understand each result.
Response from Function HealthAug 2, 2026
Thank you for taking the time to share your experience, Tara. We're so glad to hear you found the results clear and easy to understand. We appreciate you trusting Function with your health.
Mary B.
I would recommend Function Health to everyone. The blood work is extremely thorough. The follow up Clinician notes are very detailed and very helpful in understanding the biomarker numbers. The price is very reasonable. The phlebotomist at Quest Diagnostics said the test requested would cost several thousand dollars. She said most doctors would never request this detailed bloodwork unless the patient had an issue. I want to prevent medical issues by catching things early. This bloodwork is one tool to help.
Response from Function HealthAug 2, 2026
Thank you for your kind words. We’re delighted to hear you found value in the testing and clinician notes. Thank you for sharing your experience and recommending Function.
