Function Health Reviews 1,151

TrustScore 4.5 out of 5

4.3

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Review summary

Created with AI, based on recent reviews

Looking at 1,150 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the detailed and clear information provided, especially the thorough explanations for each test marker and the comprehensive summary clinical notes. Many appreciate the ease of the process, from setting up tests to receiving results, and find the product offers valuable insights into their health at a reasonable price. The ability to track numerous biomarkers and receive recommendations for supplements and diets is also highly valued, empowering users to take charge of their health. However, some people mentioned dissatisfaction with the lack of direct interaction with medical professionals to interpret results or guide treatment, feeling the experience was impersonal and lacking follow-up. There were also concerns about the cost of additional tests and the amount of blood drawn, with a few reporting issues with partner services and customer support responsiveness.

What people talk about most

User experience

Users describe positive interactions with user experience, highlighting the clear and detailed information on... See more

Service

Customers consistently note ambiguous experiences with service, with some praising its timeliness,... See more

Product

Clients share positive opinions on the product, highlighting its thorough testing, detailed results, and... See more

Price

Reviewers highlight ambiguous aspects of price, with many customers finding the service to be a good value... See more

Customer service

Reviewers mention ambiguous feedback about customer service, with some customers praising the responsiveness... See more

Reviews shaping this summary

Rated 4 out of 5 stars

Really enjoyed seeing the results of a battery of tests. Also love the AI generated protocols. Only gave it 4 stars because my doctor complained she wished the printout would include the range for eac... See more

Company replied

Rated 4 out of 5 stars

Blood tests are very good; lots of information. Now if only my Dr actually knew what to do with all this information… It would be nice if Function Health offered a consultation with a Dr after you get... See more

Company replied

Rated 5 out of 5 stars

Excellent experience that allowed a deep dive into my health. Through Function I was able to take the guessing away and gather data. Now I can make targeted steps to improve my health. Love the thorou... See more

Company replied

Rated 5 out of 5 stars

Wonderful in every way. WELL worth the money, plus you can use HSA/FSA funds to cover it (we did). Really thorough testing and thorough details on the results! Extremely useful. Get the baseline info... See more

Company replied


4.3

Excellent

TrustScore 4.5 out of 5

1K reviews

5-star
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1-star

Asks customers to review

This company invites their customers to review, whether positive or negative

Replied to 85% of negative reviews

Typically replies within 1 week

How this company uses Trustpilot

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Rated 1 out of 5 stars

Hard to get hold of the support

Hard to get hold of the support.
I have been trying to get my test once again, no real support in there to help until it got passed, they attempted to a chanrgeback to get there $36 , then no communication after that even i was able to see it happen in my bank account. and until now, the retest is not something they offered yet to fix their Tech stack and non communication on deadline !

31 January 2026
Unprompted review
Function Health logo

Reply from Function Health

We hear you, EL Mehdi. To look into this further, please supply the additional contact details we have requested through the platform. Thanks!

Rated 5 out of 5 stars

Very helpful information

Very helpful information

25 March 2026
Function Health logo

Reply from Function Health

Thank you for trusting us with your health. Every review helps more people discover what’s possible with Function.

Rated 5 out of 5 stars

Got the results and suggestions to…

Got the results and suggestions to improve my health in a decent amount of time. Now it's up to me to reach the goals set.

26 March 2026
Function Health logo

Reply from Function Health

Thank you for trusting us with your health. Every review helps more people discover what’s possible with Function.

Rated 2 out of 5 stars

Overall not with the money.

Overall solid tool and it’s helped identify focus areas for me as I tack my health carefully. Not sure if I will renew. Three reason for 2 stars:
1) you pretty much never talk to a person; it’s all AI driven. Would be nice to speak with someone live
2) huge upsell - lots of additional tests that get presented to you in money grab fashion. Expect to pay more than the base fee for additional tests that seem tempting
3) Ezra who they partner with for CT scans / MRI is an absolute disaster. They totally screwed up two CT / CAC scans so far (ie could not get accurate reading; scheduling mistake on their side). Their customer service is abhorrent. Never use them for anything.

21 April 2026
Unprompted review
Function Health logo

Reply from Function Health

Thank you for your feedback. This isn't the experience we aim to provide. We've just sent you a request for additional information so we can contact you directly and look into this further—we're here to help.

Rated 5 out of 5 stars

Excellent experience, detailed results

The bloodwork appointment was easy, everything at the lab was seamless and efficient. Results came in quickly, and were easy to understand. The analysis of the results was extremely detailed and very helpful. I learned a tremendous amount about my health and how I could improve it. Highly recommend!

25 March 2026
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Reply from Function Health

Your feedback is important to us. We’re constantly evolving our offerings, and insights like yours guide how we grow.

Rated 4 out of 5 stars

Easy to initiate service and…

Relatively easy to initiate service and follow instructions for labs. Clinicians notes provide suggestions that help in making decisions. AI chat is helpful by answering specific questions.

26 March 2026
Function Health logo

Reply from Function Health

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.

Rated 3 out of 5 stars

Zero Customer Support

The basic concept and service is reasonably good. The biggest issue I have is customer support. There is no number you can call to speak with a human. Their AI chat is useless, as it can't answer anything you couldn't figure out on your own. When it realizes you need an agent, it tells you to go about your day, and they'll answer you. HOWEVER, they don't answer you. Although the service seems legit, it unfortunately feels really shady to have a medical service that has no support. And very frustrating for something akin to concierge medicine. In this case, I'm trying to schedule a test I paid for a few months ago that I don't seem to have access for scheduling. So not getting back to me for something I paid doesn't feel good.

15 April 2026
Unprompted review
Function Health logo

Reply from Function Health

Hi there, we have requested additional contact details through the Trustpilot platform so we are able to look into your situation. Please reply there so we can assist you further. We will update our reply when we hear back from you.

Rated 1 out of 5 stars

Worst customer service I have ever…

Worst customer service I have ever experienced. Tried twice to get a
Grail cancer test, but the lab they used did not the right collection tubes. To make matters worse, Function would not send them to me, which would have solved the problem. I’m not using them again.

14 April 2026
Unprompted review
Function Health logo

Reply from Function Health

Thanks for letting us know. 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.

Rated 5 out of 5 stars

I feel the business gives me excellent…

I feel the business gives me excellent feedback and information with quick and easy access to the help
I need. Thank you.

31 January 2026
Function Health logo

Reply from Function Health

Thank you for trusting us with your health. Every review helps more people discover what’s possible with Function.

Rated 5 out of 5 stars

Worth More Than It Costs!

This is my second year using FunctionHealth and I love it! I have been recommending everyone I know to use it, I have already learned a lot about what I needed to adjust in my life to get healthier, and I noticed a difference in my second year!

25 March 2026
Function Health logo

Reply from Function Health

Thanks for spreading the word. Together, we’re building a community taking proactive steps toward better health.

Rated 5 out of 5 stars

Excellent Out-of-Pocket Testing

Complete functional health testing with good explanation of what is wrong and actionable steps on how to fix it all

26 March 2026
Function Health logo

Reply from Function Health

Appreciate you sharing this, Taran. Your experience shows what’s possible when you have access to clear health data and a plan to act.

Rated 5 out of 5 stars

Great value and comprehensive

Great value and comprehensive. I highly recommend this testing for anyone that wants insight and planning when it comes to health.

26 March 2026
Function Health logo

Reply from Function Health

Thanks for spreading the word. Together, we’re building a community taking proactive steps toward better health.

Rated 5 out of 5 stars

Great value

I love the amount of blood tests I get for my money. The value is amazing. The clinician’s notes are thorough and quick. A lot of extra notes explaining what it all means and the recommendations for diet and supplements are very helpful.

26 March 2026
Function Health logo

Reply from Function Health

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.

Rated 5 out of 5 stars

Helpful information with action steps

I signed up for Function because my primary care couldn’t order the labs I needed for working with my integrative medicine provider. It gave me more that I was expecting and for a cheaper price! I really appreciated the AI function to develop protocols. I like that there are actions to take, not just results with nothing to do about it.

25 March 2026
Function Health logo

Reply from Function Health

Appreciate you sharing this, Chelsea. Your experience shows what's possible when you have access to clear health data and a plan to act. 🧡

Rated 1 out of 5 stars

Do not waste your money.

Just paid the enrollment fee and trying to book the appt has been a nightmare. You cannot change your state/location even if there are no labs available. I have been trying to find someone/anyone to respond to my emails so I can book asap at another location. The chat function is not working on my account - it just says "couldnt send". Phone number is voicemail only. I just want my money back at this point.

10 April 2026
Unprompted review
Function Health logo

Reply from Function Health

We hear you, Seraphs. To look into this further, please supply the additional contact details we have requested through the platform. Thank you.

Rated 5 out of 5 stars

I love the quick results and the tips…

I love the quick results and the tips on how to do better.

17 March 2026
Function Health logo

Reply from Function Health

So glad Function is working for you, Christine. We'll keep building insights that matter most to your day-to-day decisions. 🧡

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