Mari M.
Excelente muy bueno
Excelente muy bueno

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.
Is this your business?
Correct your details and reply to customers in public. Both are free.
Claim this listing3,039 approved reviews, newest moderated first
Mari M.
Excelente muy bueno
Tony
system was down. drove 90 miles for nothing. Is there not a way you could notify patieces about clithes in the system, which are understandable. But the system was down at 8_00 and my appointment was at 10. I could have been notified.
Response from Function HealthNov 21, 2025
Hi Tony, we’re sorry for the experience at your recent lab visit. Driving 90 miles only to find the system down is incredibly frustrating. While unforeseen closures can happen, we understand how disruptive this was. Our team has emailed you so we can assist you further.
Kerry H.
The whole process was a breeze!!
Response from Function HealthNov 21, 2025
Thank you for your feedback, Kerry. We’re glad to hear the entire process felt easy and seamless for you.
George
I was happy with Function Health when I had my labs done and received my results in the portal. Then I ordered a test for my son through my account. My son never received an email or link from them so I reached out to Function. They told me my son has to reach out so he also did. They told me REPEATEDLY that they would "resolve the issue" and send him a link so he could access the lab request but they never did. We waited and waited then I asked for a credit on my credit card, they said sure they would process it and they NEVER DID. I had to put a stop on my credit card for the charge and told them so, they did not respond. My membership is coming up for renewal but after this I wrote to them, again repeatedly that I don't want to renew, they said they would "escalate" the issue and guess what, they still have not responded. I'm so upset this really seems like a big scam to me! You can't call and speak with a human. So frustrating I would never use this company again!
Response from Function HealthNov 21, 2025
We’re sorry for the frustration this caused—it’s not the experience we aim to deliver. Our team has been in contact over email. We appreciate your patience as we work to ensure everything is fully resolved.
Maureen F.
Excellent experience with Function Health. I had a lot of tests done and they gave me a thorough analysis/ clinician review of my results.
Response from Function HealthJan 2, 2026
Thank you for trusting us with your health. Every review helps more people discover what’s possible with Function.
Robert N.
I HAVE UPDATED THIS REVIEW AFTER GETTING MY ISSUE RESOLVED. EMAIL SUPPORT WAS VERY HELPFUL, AND IS WHY I ADDED A STAR. THE THING I CAN'T WRAP MY ARMS AROUND IS WHY ISSUES CAN'T AT LEAST BE ESCALATED TO PHONE SUPPORT WHEN WARRANTED. I'M A BUSINESS PROFESSIONAL AND UNDERSTAND THAT WITH COSTS KEPT DOWN, PRICES TO THE CONSUMER CAN REMAIN COMPETITIVE AS WELL. BUT I DON'T AGREE WITH FUNCTION'S "NO PHONE CALL SUPPORT" POLICY. FOR ONE THING, IT ALIENATES PAID MEMBERS. SECONDLY, IT CAUSES A LOT OF TIME AND FRUSTRATION TO BE ENDURED IN ORDER TO GET A SITUATION RESOLVED. AGAIN, SUPPORT RESOLVED MY ISSUE AND WAS VERY PROFESSIONAL AND COURTEOUS. IT'S JUST THE 'NO PHONE CONTACT' I CAN'T GET PAST AND GREATLY INHIBITS MY RELATIONSHIP WITH FUNCTION AS A COMPANY. ALSO, QUEST—THE LAB THAT FUNCTION PARTNERS WITH IN DOING BLOOD DRAWS—ALSO DOES NOT OFFER ANY WAY TO SPEAK TO A HUMAN. WHAT IS THIS WORLD COMING TO THAT COMPANIES ARE BECOMING LESS WILLING TO SPEAK TO THE PEOPLE WHO BUY THEIR PRODUCTS AND SERVICES? IT'S UNACCEPTABLE AND SHOULDN'T BE TOLERATED. ONCE MY MEMBERSHIP IS UP, I WILL NOT RENEW IF THIS "NO PHONE CALL" POLICY IS STILL IN PLACE. HOPEFULLY, OTHERS WILL DO THE SAME TO NOT LET THIS DISCONNECTION FROM CUSTOMERS SPREAD TO MORE AMERICAN BUSINESSES. Function offers very poor Support.... The Chat on their website is 100% AI and you can't transfer to a live human. Also, they do not offer phone support at all—ever. Only texting or email, which creates a very slow process to get a simple request accomplished. Since the membership fee is significant, it doesn't seem right to have such a disconnect to paying members. When we scheduled our blood panel, I added a $399 panel. Then, a few days later, I received a text that said I had two appointments, one on Saturday and then one on Monday for the additional panel. I wasn't told this huge inconvenience of additional time and discomfort would be the case. When I tried to reach Function to see about combining panel draws into one, I have not been able to speak to anyone. I just have been getting very poor email support from different people, offering no swift solutions. Just back-and-forth, one small step at a time, taking hours with no resolution.
Response from Function HealthNov 14, 2025
Hi Robert, we apologize for the delay and understand how frustrating that can be. Our team let us know they were able to connect with you and resolve the issue. Your feedback is valuable to us as we work to improve the overall member experience.
Mike K.
Underlying product is Quest Diagnostics lab work, with a very nice wrapper. Scheduling is easy, and results are fast and nicely presented. Difficult to get labs in your actual Quest account (so no connection to Apple Health for example — the new Health integration is one-way the wrong way). If you check Reddit, you’ll also see how pissed early adopters are, because they offer better ongoing pricing to new members, and do not honor pricing for existing customers.
Response from Function HealthNov 15, 2025
Hi Mike, this isn't the member experience we strive to provide. Our team is available to look into the specifics of your account further. We’ve requested additional details through the Trustpilot platform—please reply there, or you can reach us at [email protected]. We’re here to help.
jeff W.
Super disappointed. I left Lifeforce for Function because it was supported by Huberman. It might be that once you get into the platform it's good, but I have had multiple conversations with their terrible support team simply to get the login to work and still can't work it out. In the middle of a chat session the chat tool quit working. The basic experience is terrible so I can't imagine they are going to get the hard stuff right.
Response from Function HealthNov 14, 2025
We hear you, Jeff. This isn’t the experience we aim to deliver. Our team has reached out via email to help resolve this directly with you. Thank you for your patience—we're here to help.