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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Stacy
Quest Lab was very easy & fast results. Downside limited contracted sites for these labs in MT. I was easily able to do both draws while traveling in Seattle & CA bay area.
Response from Function HealthFeb 19, 2026
Thanks for the thoughtful review, Stacey. Your input helps guide what we improve next.
Nicole
A great value for an in depth report on bloodwork. Tested a lot of things I wouldn’t have known to test otherwise.
Response from Function HealthFeb 20, 2026
We’re thrilled you’re finding value in Function. Our mission is to empower members like you to understand and take charge of their health.
Eileen S.
The insight I received from the clinical summary provided me the opportunity to fine tune my nutrition and supplementation to optimize my overall health. I was very pleasantly surprised at the thoroughness of the testing and clinical summary. I have encouraged my family and friends to use Function!!
Response from Function HealthFeb 19, 2026
Thanks for spreading the word. Together, we’re building a community taking proactive steps toward better health.
Nick
I used Function Health for two years. It was fine for the price although I could have used my own AI to review my tests. What was really irritating is that when I moved and changed email addresses I apparently missed my November, 2025 annual payment and when I went to reinstate my account in February, 2026 they had already deleted my account and I have no access to my records and cannot reinstate my account.
Response from Function HealthFeb 18, 2026
Thanks for letting us know, Nick. We’re sorry your experience wasn’t what you expected. We’ve reached out to gather a few more details so we can look into this further. Once we gather the necessary details we will update our reply here.
Rochelle
I got scammed. Don't let it happen to you. It's a great concept but they don't deliver. Listing all their failures would take too long. Do yourself a favor, go somewhere else. I wish I had. Buyer Beware.
Response from Function HealthFeb 18, 2026
We are sorry to hear about your frustration, Rochelle. In order to look into your experience further, please supply the additional contact information we have requested. We will update our reply here after we hear back.
Mr.D
Lab results were easy to read. Functions tech team was quick to help as well. The details i didnt give were recognized and explained in detail to help me formulate and optimize my health plan.
Response from Function HealthFeb 26, 2026
We appreciate you sharing this. Reviews like yours inspire others to take the first step toward understanding their health.
Steve S.
The detail around the results from this blood panel test were extraordinary and very enlightening. Thank you!
Response from Function HealthFeb 18, 2026
We’re thrilled you’re finding value in Function. Our mission is to empower members like you to understand and take charge of their health.
Kate B.
I have been a member of Function for more than a year and really appreciate the depth of results I can get without trying to haggle with my doctor to get the blood work I feel is necessary to determine what is going on with my health. It's been a game changer!
Response from Function HealthFeb 18, 2026
Thank you for trusting us with your health. Every review helps more people discover what’s possible with Function.
