Gary
Results were timely and had good…
Results were timely and had good summaries of the meaning, and steps to take for various issues.
Response from Function HealthFeb 17, 2026
So glad Function is working for you.

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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Gary
Results were timely and had good summaries of the meaning, and steps to take for various issues.
Response from Function HealthFeb 17, 2026
So glad Function is working for you.
Francis L.
Life-saving discovery of elevated blood mercury plus other clinically significant abnormalities not usually tested made me a true believer.
Response from Function HealthFeb 16, 2026
To 100 healthy years.
Yana S.
Function is so incredibly speedy in their processing. I am obsessed with checking the portal. It's been a game changer. The clinician notes are incredibly insightful, maybe sometimes a little hard to translate from doctor-ese, but I get it. This is the most invaluable tool and I cant stop talking about it. I am so hopeful about why I have the issues I do when no one has been able to help me to date.
Response from Function HealthFeb 16, 2026
Thanks for spreading the word. Together, we’re building a community taking proactive steps toward better health.
Emma K.
In reading what was provided, I expected more. I was under the impression that I would receive “Day-to-day changes that may improve your numbers for the next time you test” (Function’s words), but it was just a list of supplements and food to eat and avoid (which were, in my opinion, fairly obvious). The clinician report might have been helpful if I had not been reading my results as they came in, but honestly, AI had already told me what the clinician report shared. It was highly disappointing. When I emailed customer service they basically directed me to AI and my PCP.
Response from Function HealthFeb 17, 2026
Thank you for sharing your honest feedback. We’re sorry to hear that the guidance did not meet your expectations. Your perspective on the clinician report and overall experience is important. Feedback like yours helps us continue refining the depth, clarity, and personalization of the recommendations we provide.
Victoria
I love the full explanations of each test. What it means and how to fix it. I love that it is on an app that I can review at any time.
Response from Function HealthFeb 16, 2026
So glad to hear you’re enjoying Function. We’re excited to keep supporting you with insights that matter most to your health.
Mark T.
Function Health has been a real game changer in my journey toward optimum health. Doctors don’t routinely run most of the blood markers that are included in the Function Heath menu. I was able to identify and correct certain issues that needed my attention that were never identified by my annual exams or previous blood work. I highly recommend Function Health to anyone looking to take take responsibility for their own health.
Response from Function HealthFeb 16, 2026
Your feedback means the world to us. We’re here to help you unlock a clearer, whole-body view of your health.
customer
Nice and easy scheduling the blood draw. Thorough test with exceptional info on why each test is important to your body and health. Put my mind at ease and gave me a detailed plan on next steps.
Response from Function HealthFeb 16, 2026
We’re here whenever you need us.
J. S.
Great experience so far with my first year with Function Health. Great communication from the staff/website and awesome clinician interpretation of my results. So thankful to have the opportunity to take charge of my own health through Function and monitor my own bloodwork along with professional interpretation.
Response from Function HealthFeb 16, 2026
Thank you for trusting us with your health. Every review helps more people discover what’s possible with Function.