mike D.
The Comprehensive report was easy to…
The Comprehensive report was easy to understand
Response from Function HealthApr 9, 2026
Thank you, Mike! We're so glad the report was clear and easy to follow. Way to take charge of your health! 🧡

Function 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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mike D.
The Comprehensive report was easy to understand
Response from Function HealthApr 9, 2026
Thank you, Mike! We're so glad the report was clear and easy to follow. Way to take charge of your health! 🧡
Tiffany
The detailed explanations of each test and outcome was great!
Response from Function HealthApr 9, 2026
Thank you, Tiffany. We're so glad the detail in your results made everything clear. Way to take charge of your health! 🧡
Jay
ease of blood draw. speed of updated results.
Response from Function HealthApr 9, 2026
Thank you, Jay. We're so glad the process was smooth and your results came through quickly. We're glad you're here.
Linda J.
After researching biomarker testing services two years ago, I decided to go with Function Health since the user experience looked good and there was just one price for all the basics (although you can add other tests on). When I went to schedule the first appointment for my third year, I answered the normal questions that made sense for blood testing, but noticed there was a whole new page of "Life Experience" questions that included very personal questions on mental health that are unrelated to the biomarkers I chose Function for initially. Some of the questions included a "prefer not to answer" option, but most did not. With where things are with AI, data mining, etc., I'm not comfortable providing that type of data for a service I'm not asking for. Their support team said they'd schedule the appointment for me since I couldn't complete it on my own. I still like the service and have gifted it a couple times, but think they should stay in their lane on the biomarkers, or give people a way of opting out of answering all unrelated mental health questions.
Response from Function HealthApr 9, 2026
Thank you for sharing this feedback and for being a loyal member for three years — it truly means a lot. We hear you, and we appreciate you taking the time to be so specific. Your input on the survey experience helps us shape how we continue to evolve the product, and we'll make sure this gets to the right team. We're glad our support team was able to help you move forward, and we look forward to continuing to support your health. 🧡
Bargain S.
The results were received quickly and in a way that was easy to understand. I especially liked how they were graphed in conjunction with my results from previous years so I can track improvements as well as regressions. I also appreciated how they were broken down into a final report that highlighted the important areas of concern. My PCP has a portal that is confusing, hard to comprehend and offers no recommendations. So Function Health is a welcome change and lets ME take control of my own health thru informed decisions.
Response from Function HealthApr 9, 2026
We appreciate you sharing this. Reviews like yours inspire others to take the first step toward understanding their health.
Caroline
If I could give zero I would. HORRIBLE experience. They make it impossible to talk to anybody and refuse to give refunds. I do NOT recommend.
Response from Function HealthApr 6, 2026
Hi Caroline, we’re sorry to hear this—this isn’t the experience we aim to provide. Our team has reached out via email to support you further and assist with a refund. We appreciate you bringing this to our attention and hope to resolve it soon.
Laura
I'm very happy with the support I'm getting with Function. It is changing my life in big ways. I love having control over my health and it keeps me on my path to continued wellness. Being able to chat with a doctor when I have questions about my test results is the icing on the cake!
Response from Function HealthApr 9, 2026
Your feedback means the world to us. We’re here to help you unlock a clearer, whole-body view of your health.
Jennifer
Finally a proactive approach to health and wellness and longevity. Backed by best in class medical professionals with a progressive view on whole body health - not just a bandaid approach. More than 100 biomarkers that I can track. Add on tests at will. Cost effective. Clinician reviews. Recommended supplements and diets to match my state of health and support my goals. Amazing quite frankly. Thanks function health.
Response from Function HealthApr 9, 2026
Thank you for trusting us with your health. Reviews like this help more people get access to the testing and insights they need.