Function Health (functionhealth.com) has a 4.5 out of 5 rating on OK.one, based on 63 user reviews collected here. It is listed under Health & Medical and its reputation is excellent. 86% of reviews are 4 stars or higher and 3% are 1 star; The business has replied to 50% of negative reviews. Last updated 2026-08-10.
The analysis of my blood was complete in the extreme. When the work was done it asked for feedback. If I were not very focused on my health, I would never have submitted to it. So, when FH gave me a biological rating four years older than my chronological age I commented about it. I was told to make a suggestion. FH uses certain blood markers to determine biological age. There are many other factors that contribute to a person's biological age that FH ignores. Its chatbot admitted that. I think FH fails miserably in its definition and use of the term biological age.
Reply from Function Health2026-08-05
Hi Patrick, we're sorry to hear the biological age feature didn't meet your expectations. We appreciate you taking the time to share your thoughtful feedback. Member feedback like yours is valuable as we continue improving our insights and the overall experience. If you'd like to share more or have any questions, please reach out to us at [email protected]
Very quick and efficient process from start to finish; very informative and affordable if you're into longevity and monitoring an array of blood factors. The tests are affordable and the app has an integration with Claude and the Apple Health app, so you can do indepth analysis of the data. I highly recommend. I just wish that there was a Quest lab in the Ann Arbor area.
I love function. It gives me the ability to monitor my bios twice a year and make adjustments with food first and supplements if needed. I’m able to stay on top of my health and basically functional!
Very detailed reports and explanation of all the bio-markers! It will make you aware of everything that’s going on in your body! Knowledge is power, you can take better care of yourself with help from Function’s reports and analysis!
J
Jen · 1 review · Verified · Experienced 2026-08-03 ·
Amanda was wonderful! She was gentle while drawing my blood, which made the experience comfortable and stress-free. Her warm, welcoming attitude first thing in the morning truly stood out and set a positive tone for my visit. Excellent care and outstanding customer service!
J
Jean · 1 review · Verified · Experienced 2026-07-27 ·
★★★★★
Quality
Timely, quality, trustworthy
C
Charlotte · 1 review · Verified · Experienced 2026-07-27 ·
★★★★★
The phlebotomist was friendly and…
The phlebotomist was friendly and quick. Results were clear and received them promptly. Value for the money is phenomenal.
They have done more for me to understand my neuropathy and how serious my condition was than any neurologist ive seen in the last 20 years. For the first time I believe there is relief in sight even though it will not happen overnight. Thank you to all the professionals and the great staff at Functional Health
Function health is the best opportunity for you to take control of your health. I like having the control that I can make and arrange my own tests. Going to the doctor once a year is not enough. Basic testing is not enough. This is the best investment I can make to hopefully live a healthy long life.
Function Health is a great tool to monitor your health, especially as you grow older and/or have issues that need to be monitored. I am a gastric bypass patient that had surgery 32 years ago. The tests for my HDL, LDL, Triglycerides are important to me, as are my iron levels and heart data. I use Function Health results to compare against previous tests and see what has changed and/or can be changed to maintain a healthy lifestyle. I recommend this to everyone.
R
Ryan · 1 review · Verified · Experienced 2026-07-27 ·
★★★★★
Easy and comprehensive
Their results are very comprehensive and scheduling the blood draw was very quick and easy. The availability was very open.
I love the efficiency, quick results and timely response to questions asked. I am having a little taking advantage of all the aspects of function but love seeing a complete outlook of my labwork and how everything is related.
I highly recommend the use of this company to keep up with your health needs when speaking with your primary doctor and other specialists.
