William A.
Quick results…
Easy to get appointment and the results were very quick. I like that the clinician explains the results and gives you advice.

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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William A.
Easy to get appointment and the results were very quick. I like that the clinician explains the results and gives you advice.
Evelyn K.
Great website, service & pricing.
Mark C.
The whole experience of getting really complete bloodwork with all the biomarkers I always wanted to check, was well worth the investment and may have helped prolong my life with the results and measures to take to achieve that.
VanDine
Function health has been a game changer. I wish I had this 20 years ago.
Response from Function HealthOct 18, 2025
Thank you for sharing your story, VanDine. We're thrilled Function has been such a game changer for you. Every review helps more people discover what’s possible with Function.
Ilya
I’ve sent a request to cancel an automatic renewals 5 days ago and followed up 4 times. No response. Strange behavior.. Overall the product seems good, I’m yet to do the test, but with the price tag, I would expect the customer support responses within 48 hours max, without the need to follow up so many times.
Response from Function HealthOct 19, 2025
Thank you for sharing this feedback. We’re sorry for the delay in responding to your auto renewal cancellation request — that’s not the experience we want for our members. We understand timely support is especially important at this price point, and we’re working to improve our response times to better meet that expectation. Our team has reached out directly to ensure you feel supported.
Beth
Quest Diagnostics is great. The people there are genuinely nice, hard-working, and good at what they do. The only concern was that the closest lab to us was 3-1/2 hours away. Function Health stated there was an average of 20 labs per state. They should rewrite that and say there’s 20 labs per large cities.
Nancy Shreve L.
So thankful for your contribution in helping to heal the world through health advocacy. I’ve been struggling with what I thought was an autoimmune issue, as well as already diagnosed mcas, and through your testing program I was able to solidify my suspicions. Pa
tara
Love the testing and the APP.. I think the clinical notes could be a little better with direction as it seems to be written by ai.