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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Kathleen
I love function health as I tell ever about it. However my referral rewards won’t recognize my email login and I tried to reach out to your company and it’s been months and no follow up. I filled out your IRS form but how can I even get logged in to collect my $100 referral?
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 🧡
Lydia
Eh. Limited info given on markers and how to interpret. Had to do my own research. They said they would call you if a marker is troublesome but nobody did and my ferritin was dangerously low. There omega testing uses subpar standards to omegaquant, resulting in skewed results. Made it very difficult to cancel-- all of a sudden, no responding.
Response from Function HealthOct 1, 2025
Hi Lydia, we hear you. This isn’t the experience we strive to provide for our members. We have sent you an SMS and would be happy to assist you further regarding your specific concerns there.
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!
Daniel F.
I liked the thorough blood work and the follow up blood work. I think what would take your service to the next level is for the client to get a 30 minute call from a health professional to review their blood work results and the recommendations
Response from Function HealthOct 1, 2025
Hi Daniel. We appreciate your input, and have shared it with our team. Function is continually evolving as we work to deliver the best possible experience for our members. Currently, our licensed clinicians authorize every test and personally review each result. A clinician will call you if there are any time-sensitive and/or urgent results as the results become available.
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.
