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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Paul B.
Found issues that I would never had seen by going to my doctor. Loves the insights and the plan. Will be interesting to see how thing improve.
Response from Function HealthOct 7, 2025
We love to hear it, Paul—thank you for sharing your experience. Your story helps others see the value of taking control of their health with Function.
NM
I was very concerned if this was legit, read many reviews and decided to take the plunge. I had a stellar experience. When I ran into some concerns about when to take my tests, the customer service was exceptional, kind, knowledgeable, and very fast! My first set of results came quickly, the rest took a while longer which made me nervous. The results were along what I was expecting with a few added results that I was not expecting but made sense. My doctor was very indignant when I gave him my results to go over, even though he did not argue with them, so expect your doctor to be weary of the results only because they themselves didn't think to order such a comprehensive test!!! Over all, extrememly happy with Function Health and am recommending it to everyone who will listen!
Response from Function HealthOct 7, 2025
We appreciate your recommendation of Function, NM. Reviews like yours inspire others to take charge of their health.
karen
Found ANA antibodies I didn’t know I had . Found high cholesterol and other no so great cardiac markers , found a thyroid nodule .
Response from Function HealthOct 7, 2025
Thanks for sharing, Karen. Your feedback shows how valuable advanced testing with personalized insights can be.
El C.
I participated with Function Health as a way to advocate for myself. 100 tests and insights into various body functions were important but I was only getting 10 or 20 from my primary care. While a few of my results were out of range it gave me things to focus on for the 6 month follow up. I recommend.
Response from Function HealthOct 7, 2025
Way to take charge of your health 🧡
Nancy W.
I've been having gut issues for maybe ten years now, and they've recently gotten much worse. I took the food sensitivities test, and found out that I am strongly reactive to casein (in all dairy), egg whites, and wheat. Since I found out my results, I've cut those things out of my diet and within days, my digestion issues have gotten MUCH better. It's worth the money spent on Function Health for that reason alone. Thank you, thank you, thank you!
Salvador, E.
Great customer service and the feedback on bloodwork was helpful.
Deborah C.
I am a Registered Nurse for over 40 years. I was very impressed with test s ordered and finial summary. I highly recommend you services!
Response from Function HealthOct 7, 2025
Thank you for the kind words, Deborah. We’re glad you found the testing and summary valuable.
Sharon G.
I got a call from Function when there was troubling results.
