Function Health Reviews 1,152

TrustScore 4.5 out of 5

4.3

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Review summary

Created with AI, based on recent reviews

Evaluating 1,144 reviews, reviewers overwhelmingly had a great experience with this company. Customers are very satisfied with the comprehensive health insights provided, finding the detailed explanations and clinical notes extremely helpful for understanding their bodies. Many appreciate the ease and affordability of accessing extensive testing, which empowers them to take charge of their health. The process, from scheduling lab appointments to receiving results, is frequently described as seamless and efficient. However, some people mentioned dissatisfaction with the lack of direct consultation with doctors to interpret results and guide next steps. There were also concerns regarding the amount of blood drawn during tests and issues with partner services like Ezra for imaging. A few reviewers also experienced problems with customer service responsiveness and the clarity of past medication references in explanations.

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

It’s awesome to be able to gather that type of information as I ease into age 59 with a Biological Age of 47.5! Even knowing what “Biological Age” means came from Funtion Health!!! Simply being able... See more

Company replied


Company details

  1. #2 of 5 best companies in Blood Testing Service
  2. #3 of 5 best companies in Diagnostic Center
  3. #29 of 36 best companies in Health Consultant
  4. #3 of 5 best companies in Medical Laboratory
  5. #5 of 6 best companies in Specialized Clinic

Contact info

4.3

Excellent

TrustScore 4.5 out of 5

1K reviews

5-star
4-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

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Rated 5 out of 5 stars

Convenient, timely, complete

Scheduling was convenient and communication was timely and information very complete.

April 27, 2026
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Reply from Function Health

Thanks for sharing this. We appreciate you being part of the Function community.

Rated 5 out of 5 stars

Function health has been a tremendous…


Function health has been a tremendous resource for my wife and I. Through the blood work we’ve been able to get a tremendous amount of health information which we forward to our primary care of physicians. Very helpful, very beneficial and very useful.

April 27, 2026
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Reply from Function Health

We’re glad to hear this—thanks for sharing. It’s great that the insights have been helpful for you and your wife and useful in conversations with your care team.

Rated 1 out of 5 stars

This company is pretty much a scam

This company is pretty much a scam. Yes you do get to have certain lab tests done at a cheaper price. However, their customer service is awful. Their emails are all sound AI generated and they give you the runaround when you run into an issue.

May 10, 2026
Unprompted review
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Reply from Function Health

Thank you for sharing your feedback. We’re sorry to hear that your experience with our support did not meet expectations. That’s not the experience we aim to provide. Your comments have been shared with our team as we continue working to improve communication and support for our members.

Rated 3 out of 5 stars
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Reply from Function Health

Thank you for your feedback. We’re sorry to hear about your experience and have reached out privately to learn more. Please reply to our message when you can—we’d like to help make this right.

Rated 1 out of 5 stars

More customer service

More customer service, more opportunities to talk actually to any professional service.

April 24, 2026
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Reply from Function Health

Thank you for your feedback. We understand the importance of having more direct support and opportunities to speak with someone. Our team has sent you an email to assist further and we’ll be happy to continue helping there.

Rated 5 out of 5 stars

I love how easy they make it to get…

I love how easy they make it to get your blood tested & how they analyze your results.

April 27, 2026
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Reply from Function Health

So glad to hear this—thanks for sharing. We’re happy the process and insights have been helpful.

Rated 4 out of 5 stars

Blood tests are very good

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 your blood test results!

April 27, 2026
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Reply from Function Health

Thank you for sharing your feedback. We’re glad you found the testing valuable. Your suggestion has been shared with our team as we continue improving the member experience.

Rated 5 out of 5 stars

Excellent information.

Amazing experience, only wish they had more testing locations.

April 27, 2026
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Reply from Function Health

We’re glad you had a great experience. We hear you on testing locations and are continuing to work on expanding access.

Rated 5 out of 5 stars

Easy to do and very informative

Process was easy and report provided was insightful.

April 27, 2026
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Reply from Function Health

Thank you, Chris. We're so glad the process was smooth and the insights were valuable. 🧡

Rated 5 out of 5 stars

Function Health's communication with me…

Function Health's communication with me about time to show up at the Quest lab was accurate and helpful. Quest was ready for me on time and quickly took blood samples and within a few days had begun reporting results. Function Health gave me a summary within two weeks of the results and suggestions for the future. The price of the test was very reasonable and provided me with a lot of useful insight into my health.

April 27, 2026
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Reply from Function Health

Thank you, Paul. We're so glad the process was smooth from start to finish and that the insights have been valuable. We're thrilled to have you here.🧡

Rated 4 out of 5 stars

i had a high PSA score

i had a high PSA score and wanted to do a second test quickly. a PSA test threw the doctor is a couple hundred bucks so I did function.

April 27, 2026
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Reply from Function Health

Thank you, Hugh. We're so glad Function could give you quick and accessible access to the information you needed. 🧡

Rated 5 out of 5 stars

The diagnostic center I go to for blood…

The diagnostic center I go to for blood work is very close. I don't have to wait long. The doctor's note about the results arrive pretty fast, so I don't really have any negative comments about the process.

April 27, 2026
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Reply from Function Health

So great to hear this—glad everything has been smooth and convenient!

Rated 3 out of 5 stars

I liked being able to schedule so many…

I liked being able to schedule so many blood draws for the price.
I liked the notes I received with a detailed analysis.
I found it extremely difficult to use the website because (a) communications had to be solely through chat, and the chat was not helpful. The referral to a “Concierge service” seemed to be a referral to another chat bot.
Scheduling blood draws was difficult, as was scheduling the type of blood draw I wanted.
For example, after my initial blood draw, function Health notified me that within two months I should be retested on two specific parameters. Therefore I indicated on the website that I wanted a retest on those two specific parameters, of both of which were high. Instead, my follow up blood draw two months later was a retest for parameters that I did not request. I wanted to wait at least six months for my follow up retests that are included in the package. I was unable to schedule a retest on the two parameters that are high, which function health encouraged me to get retested within two months.

April 27, 2026
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Reply from Function Health

We are truly sorry to hear about your experience. We’d love the chance to help resolve this for you. Please reach out to us at hello@functionhealth.com, and our team will be happy to assist.

Rated 5 out of 5 stars

preventive medicine saves lives!

Function Medicine gives me the tools I need to understand my health and to be proactive about changes I need to take in my life in order enjoy a better and healthier life

April 27, 2026
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Reply from Function Health

Thank you for sharing this. Way to take ownership of your health, Vivian.

Rated 5 out of 5 stars

Very professional

Very professional. Very thorough. Will definitely recommend.

April 27, 2026
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Reply from Function Health

Thank you, Michael. We appreciate the recommendation and we're thrilled to have you here.

Rated 5 out of 5 stars

I was very impressed by how easy and…

I was very impressed by how easy and fast both the bloodwork was and the results.
I visited a specialist at a University hospital and your results helped immensely with my meeting. The AI generated suggestions were right on with what the drs suggested!

April 27, 2026
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Reply from Function Health

Thank you for sharing this! We're so glad the process was smooth and that your results gave you something valuable to bring to your specialist visit. 🧡

Rated 5 out of 5 stars

I was very impressed with the lab…

I was very impressed with the lab report and the extensiveness of it. I took it to my doctor and we worked through it to come up with a good supplement program I would not have otherwise done. I now feel like my supplements are being custom tailored and optimized for my health. I am recommending Function Health to family and friends. Thank you!

April 27, 2026
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Reply from Function Health

Thank you, Angela. We're so glad the depth of your results gave you and your doctor something meaningful to work with. We appreciate you sharing Function with your family and friends. Way to take charge of your health.🧡

Rated 4 out of 5 stars

Overall worth it despite some clunkiness

This was ultimately a less expensive way for me to check in on my health in America even with really great health insurance through my work. I am pretty uncomfortable with how much ai is utilized in this company, but i suppose that’s how they can do this for a lower price. i was however extremely put off by having to click no to 10 (or more) super pricey add ons to complete my order. please condense this into one page! the ai bot who created my Clinician Notes misread my information originally and gave me advice as if i had abnormal hormone levels and this was signed off by a doctor, but a few weeks later they realized a mistake was made and revoked the notes and created new ones. that was weird but okay. the ai seems pretty trained to see veganism as bad for your health and tried to tell me to never eat soy. that was really icky and misinformed. ultimately this was worth it and im really thankful to have the knowledge this provided me and am now on a protocol with my doctor to address my two deficiencies!!

April 27, 2026
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Reply from Function Health

Thank you for this honest and thoughtful feedback, Clementine! We're really glad Function has been valuable and that you now have a clear path forward with your health. We hear your feedback on the add-on experience and the notes correction. We're always working to improve, and input like yours helps us get there. We're glad you're here. 🧡

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