My Function Health Review: Are the 100+ Tests Worth the Price?

I first heard about Function Health the way a lot of us probably did, through a wave of social media buzz and wellness influencers talking about blood work and biomarkers. As someone who already tries to stay in tune with how I feel day to day I was a bit intrigued. But I’ll be honest, I was also skeptical. There’s always a new health trend or longevity product popping up, and it can be hard to know what’s actually worth it!

It wasn’t until Function Health reached out and offered to gift me a one-year membership that I decided to go through with it. With that being said, I wasn’t paid to write this post and this review isn’t sponsored. This is just my honest take on the experience. I wanted to share everything from the sign-up process to getting my blood drawn, what the results looked like, and whether or not I think it’s truly worth the cost.

So this post is a detailed look into what it’s actually like to use Function Health. We’ll cover how the platform works, what I liked (and didn’t), and whether I’d recommend it to you.

If you found this Function Health review helpful and are thinking about trying it yourself, you can sign up using my referral link here. There’s no extra cost to you, but it does support me and my work. Last I checked there was also a waitlist and my link should let you skip it.

But, no pressure at all, I genuinely just hope this post helps you make an informed decision either way!

So What Is Function Health? 

Function Health is a membership-based service focused on comprehensive health testing and long-term prevention.
It was co-founded by Dr. Mark Hyman, who’s widely known for his work in functional medicine. While I don’t necessarily align with everything he says, I focused on what the service itself offers. Aka, to give people access to in-depth health data that goes far beyond what most of us get in a standard annual check-up.

The idea is that the earlier you catch potential imbalances or issues, the more options you have to address them. Given that our healthcare system is relatively reactive rather than proactive, I loved the idea of having an in-depth look at my bloodwork. Plus not just once, but twice throughout the year, to help me track and better understand my health over time.

But, What’s Actually Included?

The annual membership costs $499, and includes testing for 100+ biomarkers related to heart health, metabolic function, inflammation, liver and kidney function, hormones, nutrient levels, and more. The price covers both the initial testing and a follow-up lab panel 3–6 months later. I love that there’s two tests since it allows you to track progress over time instead of just getting a single snapshot!

There are additional tests available for things like cancer screening and more advanced hormone panels, but those come at an extra cost. For me, the baseline testing already felt pretty thorough (and the additional tests are expensive!). But they do have a toooon of add-ons from bone health to specific brain health tests and many, many more.

How It Works

Once you sign up, you answer a 30 question health intake questionnaire and then you’re prompted to book a blood draw at a nearby partner lab, typically Quest Diagnostics. I scheduled mine in under five minutes, and the actual appointment was pretty straightforward. After your results are in, Function Health provides a breakdown with visuals and summaries that help you understand what’s optimal, what’s in range, and what might need attention. And then a few weeks after you receive clinician notes to help put the data in context.

Why It’s Different

What makes Function different, at least in my experience, is that it brings together detailed lab work and clear insights without needing to go through a doctor’s office. The platform also integrates with national lab networks, which makes access easier if you live in a major city or near a Quest location.

It’s not a replacement for your doctor but in a system where follow-up can be inconsistent and expensive, having all your lab data in one place that you can track over time felt super beneficial to me.

It’s also cost-effective for those looking for more detailed data and an overall view of their biomarkers, but we’ll touch on that below!

The Sign-Up Process: What to Expect

Signing up for Function Health was honestly super straightforward, but there were a few nuances worth mentioning, especially when it comes to cost and lab logistics.

Cost Breakdown

The core membership costs $499 per year, which covers the initial testing panel (100+ biomarkers), access to your results with clinical notes, and a follow-up test 3–6 months later.

However, if you’re in New York or New Jersey, there’s a caveat. Due to some complex state laws (that I don’t fully understand), diagnostic labs like Quest Diagnostics can’t bill a third party like Function Health directly. Instead, NY and NJ members have to pay Quest out of pocket, Function gives you a heads-up about this during the sign-up process. But from what I researched, this can add up to an additional $500 or more, effectively doubling the cost to around $1000 annually.

For everyone else, the $499 should cover everything (there may be a small lab draw fee, usually around $6–$15, depending on location).

Health History + Goals

Upon signing up you’re prompted to fill out a 30 question intake questionnaire that asks questions ranging from how active you are to if you have a regular period (for females). They also ask if you’ve had the Covid vaccine, and if so, which kind (but this is optional to answer). It mainly asked about my general health, lifestyle habits, medical history, and personal health goals.

Scheduling My Labs

After completing the intake, I was guided to schedule a blood draw appointment through Quest Diagnostics. Before signing up, make sure you have a lab near you! Or, be willing to drive to the nearest lab. Because I’m in Los Angeles, I had a ton within driving distance, but still something to think about!

I was able to find an available slot at a nearby Quest location within a couple of days, but in order to get the earliest time slot (because you have to fast) it took 2 or so weeks. The integration with their system was also pretty easy since everything was handled digitally through the Function dashboard. They then give you some guidelines to follow to prepare for testing which I’ll dive into below.

The Lab Process: What It’s Actually Like

One of the more unique aspects of Function Health is that the lab process includes two separate visits within about 10 days since they are running a lot of tests. And, on the second visit you also have a urine sample in addition to the blood draw.

Timing Around Your Cycle

For women, Function recommends scheduling the first lab draw during your period, ideally on Day 2 or 3. This is because hormone levels shift drastically depending on where you are in your cycle, and testing during menstruation provides a more standardized baseline. That said, if you don’t have a regular cycle, this part can be tricky. I ended up needing to wait a bit to align my draw with the right timing, which delayed the process slightly, but it was manageable.

Prep Before the Visit

Function is pretty thorough with prep instructions, and they send you reminder emails leading up to the draw, which was helpful. Here’s what they recommend:

• Stop supplements: Pause any non-prescription supplements at least 24 hours before your lab (starting the day before your visit). This is to avoid skewing your results, especially with things like biotin or adaptogens. Of course, you can still take doctor-prescribed medications.
  
• Fasting: Begin a fast the night before your draw. You can drink water but no food, coffee, or alcohol during that time. I had a light(ish) dinner the night before and brought a snack for after the appointment.
  
• Stay hydrated: Drink at least 1 liter (about 4 cups) of water the morning of your visit this really helps make the blood draw smoother. They’ll be taking 10 to 12 vials, so being hydrated makes a big difference. I drank a TON of water and the blood test was a breeze!

At the Appointment

The visits themselves were quick, about 15 minutes each. You check in, they draw your blood, and you’re out. At the second visit they also collect a urine sample, though in my case, I had just done one at a different appointment and didn’t want to get tested again. I let the lab tech know and it wasn’t a problem.

One small hiccup I ran into though? At my second visit, I accidentally checked in under the normal process (using my Quest account) so they couldn’t find me in the system since it was booked through Function. And then I couldn’t find my unique lab code (I had lost it somewhere in my inbox). But when I reached out to Function’s live support, someone responded within 5 minutes and sent me what I needed right away. I had already found it, but I will say I was impressed they responded so quickly.

After the Visit

Once your blood is drawn, there’s nothing else to do except wait. Function uploads your results in waves as they become available, rather than all at once. Full results can take about 3–4 weeks, though I started seeing partial data literally the next day. The full clinician summary, however, took a few weeks to be completed (more on that below, I know, I know I keep saying this!).

Results Overview

Okay! Let’s talk results. As I mentioned I didn’t do the urine test so I had 91 markers tested total, I had 86 in range and 5 out of range.

I also found out my blood type, which was an unexpected bonus! As for the out-of-range markers, LDL cholesterol and omega-3 levels were the main areas flagged. Even though they were just slightly outside the ideal range, it was super informative, especially because it aligned with some things I’ve suspected. And it affirmed that small shifts in diet or supplementation might be helpful!

Each section also breaks everything down in a clear, actionable way so when you click on a test result it will tell you why it matters. Depending on the biomarker it may give you a ton of information such as causes, associated conditions, foods to eat and limit, supplement recommendations, self-care tips, additional tests to consider, follow-ups, and even sources. Other biomarkers might just say why it matters and have a summary.

Clinician Notes

Because I chose not to do the urine test and didn’t inform the company ahead of time, my clinician notes were delayed. That said, I honestly felt like I had enough context from the dashboard to understand the results on my own, especially since the site includes brief explanations for each marker.

However, when I decided to write this post, I did reach out to request the full clinician summary and they got back to me a few hours later and within a day I had my full summary. I was honestly expecting something super vague and not at all personalized but it actually took into account everything I had mentioned during the questionnaire, from my diet (vegan) to health issues I talked about. I also thought it was helpful and informative without being too instructional or anxiety-inducing. It recommended a few small changes such as vegan-friendly foods to add to my diet.

Below I included the clinician notes from my Nutrients section:

Pros of Function Health

Overall I found Function Health to be really useful and helpful in painting a comprehensive picture of my overall health. But like all things in life, there’s pros and cons. So, let’s start by talking about what I enjoyed about the experience:

Empowering & Insightful

One of the biggest takeaways for me was how insightful it felt to have this level of information about my body. Plus, actual guidance based on the results. They do take into account what you say and offer personalized insights and action-based recommendations based on your labs. It’s not a substitute for working with a provider one-on-one, but for someone who likes doing their own research and being proactive, it’s a powerful starting point.

The experience also made me feel more in control of my health. I now know exactly where I’m doing well, where I’m borderline, and where I should focus more attention. For example, seeing that my omega-3s were low wasn’t necessarily shocking, but it was the kind of gentle nudge I needed to make more intentional changes.

And because you get re-tested in a few months, it turns your results into something dynamic rather than static. I’m actually excited about changing my diet (slightly!) to see if I can make a difference by the time I get re-tested!

Ease of Use

The process itself was incredibly easy. I scheduled everything through the app, showed up, and got the tests done quickly. I actually wasn’t even sure I was going to move forward with it at first, but when I casually mentioned it to my boss, he said that he and his wife had both done it and really recommended it because it was so simple. As someone who loves simplicity, that helped solidify my decision.

Cost-Effective

One thing that stood out, and I found this initially through a Reddit deep dive, but did my own research as well, is how cost-effective the testing is, even when compared to ordering individual tests through discount lab sites. Someone broke down the cost of all the Function Health tests and found that the total would come out to over $1,200 if purchased individually. So even if you can get the basics covered through insurance or a physical, Function Health still provides around $500–700 of real value, especially for tests that are harder to access or get covered, like detailed hormone panels, heavy metals, OmegaCheck, and more.

They also offer follow-up labs at 3–6 months so you can actually track your progress, which is something most doctors don’t offer unless you reallly push for it.

Lastly, I really appreciated that there were no surprise bills. I had another blood test done the same day through my insurance and was worried it might confuse the process. But Function Health emailed me right away when they received that test from the lab (which wasn’t theirs) and sent me the receipt for transparency. It was reassuring to see how organized they were!

Cons of Function Health

While I’ve found Function Health to be incredibly valuable (you can read about the wins above), I also think it’s important to go in with a full picture of the experience, especially if you’re considering investing in it yourself. Here are a few things to keep in mind:

The Upfront Cost

Function Health costs $499 upfront, plus a draw fee, which can vary depending on your location. If you’re in New York or New Jersey, your options are more limited and potentially more expensive due to local lab laws. While this cost is relatively fair compared to ordering these tests individually, it’s still a significant investment.

Information Overload

With over 100 biomarkers tested, it can feel like a lot. Not every marker is clinically significant or relevant for everyone, and some minor abnormalities may not need any action. If you don’t have a provider to help interpret your results, it could become overwhelming trying to figure out what really matters.

Because of the volume and depth of testing, there’s potential to encounter incidental findings or false positives. While Function Health does a great job of explaining each marker and its importance, some results might raise concerns that aren’t actually problematic, which could lead to unnecessary stress.

Traditional Doctor Skepticism

If you plan on bringing your results to your primary care physician (PCP), just know that not all traditional doctors are receptive to functional or preventative-style testing. You may need to advocate for yourself or work with a more integrative practitioner who’s familiar with these types of results.

Function Health provides data, not diagnoses or treatment plans. You’ll need to partner with a healthcare provider to interpret your results in context, address any concerns, and decided if changes are needed.

Scheduling Quirks

I ended up changing my appointment a couple of times to align with my cycle, and I definitely confused their system. I started getting reminders for my old appointment date even after I rescheduled. It wasn’t a huge issue, but just make sure you write down your actual appointment date to avoid any mix-ups.

Add-On Pricing

Initially, I was really excited to explore the add-on test options, but I found many of them to be pretty expensive. While it’s amazing that they offer so many additional tests (and they’re totally transparent with the pricing), the cost can really add up. If you only need one or two extra tests, it might be worth it, but for more casual curiosity, the price point is a bit steep after already paying $499.

Who It’s For & When It’s Worth It

Function Health isn’t for everyone and that’s okay. But for certain people and situations, it can be an awesome tool. Here’s a breakdown of when it makes sense to invest and when it might not be the right fit.

It’s Ideal If:

• You’re interested in proactive, preventative health tracking.
• You have chronic health concerns or lingering symptoms that haven’t been fully explained.
• You want to understand your body and health on a deeper level.
• You’re comfortable doing some research on your own, rather than needing every result interpreted for you.

This is especially useful for people who are investing in their long-term wellness and want a fuller picture than what they’d get through an annual physical. If you’re someone who likes feeling informed and motivated by numbers, it’s a great fit in my opinion.

It’s Not for Everyone:

• If you’re someone who prefers personalized, 1:1 guidance and clear action steps from a medical professional, this may not be for you. Function Health gives you the data and recommendations but ultimately it’s still up to you to figure out what to do with it.
• If you live in New York or New Jersey, I honestly wouldn’t recommend doing it unless you can get your blood draw in another state. The added fees and restrictions make it way too expensive!
• If you tend to obsess or get anxious about minor health fluctuations, you might find the volume of information overwhelming or stressful.
• If you just want to test a few specific markers, it’s probably more cost-effective to do that through your insurance or another lab provider.
• If you’re trying to time your blood draw around your menstrual cycle and live somewhere busy (like Los Angeles), booking an early appointment in advance can be tough. My local Quest Diagnostics was extremely busy, which made it hard to reschedule on short notice. This might not be a problem in smaller cities or towns, but it’s something to keep in mind if timing is important to you (I insisted on getting a very early appointment because of the fasting!).

Overall

I do think Function Health is worth the $499, but whether it’s right for you depends entirely on your personal circumstances, health goals, and mindset.

If you’re someone who:

• Lives in a state without added fees (like California, not New York or New Jersey),
• Wants a deeper understanding of your health beyond what you get at an annual physical,
• Enjoys tracking your health data and being proactive,
• Doesn’t need a doctor to walk you through every detail…

Then this is a great option. I personally found it sooo fascinating to see such a broad range of labs and understand how my daily habits were impacting my body. For example, I had never tested my omega-3 levels before, and while I wasn’t surprised that they were low (hello plant-based diet), it was a great reminder to intentionally add more sources into my routine.

There were also a few markers where I was right on the edge of optimal, so I’m really looking forward to my second round of testing in 3–6 months to track progress and see if the changes I make actually move the needle. (I’ll update this post once I do that second test!)

Would I do it again? Yes.

Would I recommend it to a friend or family member? I already have, I encouraged my mom to sign up!

That said, I wouldn’t do it if:

• I lived in a state with extra lab draw fees like NY or NJ.
• I felt totally fine with my annual bloodwork and didn’t want or need extra insight.
• I was the type to spiral from too much information or needed a provider to spell out every next step. In that case, a 1:1 functional medicine consult might be a better fit.

One downside for me is the cost of the add-on tests, they’re quite expensive. I think it’s great that Function Health offers them, but realistically, most people (myself included) aren’t going to spend hundreds more after already paying the base price. That’s not necessarily Function’s fault, it’s just a reflection of how expensive the U.S. healthcare system is.

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Final Thoughts

Function Health isn’t the perfect solution for everyone, but it’s a really exciting option for people who like being in the driver’s seat of their own health. It made me feel informed, motivated, and more in tune with my body. If you’re someone who loves learning about your health and seeing how your habits translate into data this might be what you’ve been looking for!

If you found this review helpful and are considering trying Function Health for yourself, you can sign up here. It is my referral link but it’s no extra cost to you and should let you skip the current waitlist. That said, no pressure at all! My main hope is that this post helps you feel more informed and confident in whatever direction you choose.

Have you tried Function Health? Please share your experience or any questions you have in the comments below! I’m always curious to hear your guys thoughts!

Curious to read my thoughts on other wellness-related tools? Read my V Shred review and why I don’t recommend it here.