Is Function Health Worth It? Real Cost Breakdown
Is Function Health worth it? After four rounds of Function Health testing since August 2024, I have a clear answer. To me it is, but whether Function is worth it to you depends on what other services you are comparing it to and what you expect to get from the data.
This is not a full review of the platform (you can read my complete Function Health review for that). This article is specifically about the cost, the value of what you get for that cost, and the real results that made me renew my membership without hesitation.
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What Function Health Actually Costs in 2026
Function Health costs $365 per year. This is down from their original price at launch of $499 per year. As a reader of Heal Nourish Grow, you can get an additional $25 off and skip the wait list, just by using this link, bringing your cost down to $340 a year. For that price, you get two comprehensive blood draws at Quest Diagnostics (over 100 biomarkers each), clinician-reviewed notes after both rounds, a biological age calculation, AI health coach access and a dashboard that tracks trends across all your testing rounds. The membership is HSA and FSA eligible, which means you can pay with pre-tax dollars and reduce the effective cost by 25 to 35 percent depending on your tax bracket.
There are no per-test fees, no surprise charges, and no additional cost for biological age or clinician notes. Optional add-ons like the Galleri multi-cancer screening, ApoE genotyping, and Omega panel are available at extra cost, but the base membership covers everything most people need.
The Cost Per Biomarker Math
My February 2026 dashboard showed 130 biomarkers tested (including add-ons I selected). At $365 per year for two draws, that works out to roughly $1.40 per biomarker per draw, or $2.81 per biomarker annually.
To put that in perspective, ordering comparable tests piecemeal through a direct-to-consumer lab service like Ulta Labs or LabCorp OnDemand would cost $1,500 or more. Even a basic panel through your doctor, assuming insurance covers it, typically tests 20 to 30 markers and does not include things like Lp(a), heavy metals, ApoB, or inflammatory markers like hs-CRP that Function Health includes in the base panel.
For comparison, InsideTracker's Ultimate test covers up to 54 biomarkers for $489 a year, working out to roughly $9.06 per biomarker. Hundred Health costs $499 per year for over 160 biomarkers across two draws (although you can save $50 at Hundred with my link). Superpower starts at $199 per year for its baseline panel.
What Four Rounds of Testing Actually Caught
This is where the “worth it” question gets personal. Here is what Function Health found across my four rounds that I would not have known otherwise.
Post-competition recovery tracking. After competing in NPC bodybuilding, my hemoglobin dropped to 8.6 g/dL (well below the 11.7 minimum) and my neutrophils fell to 760 cells/uL (below the 1,500 minimum). These are significant findings that indicate my body was under real stress from competition prep. By my February 2026 draw, hemoglobin had recovered to 14.3 and neutrophils to 1,659, both solidly in range. Without testing, I would not have known how depleted I was or been able to track the recovery.
Hormones that had not rebounded. My out-of-range results in February 2026 confirmed what I had been feeling physically: my hormones had not fully recovered from competition prep. Having that data gave me a concrete baseline to work from rather than guessing about why I did not feel quite right.
Metabolic validation. After following a keto/low carb diet since 2017, it is reassuring to see the numbers back up the approach. My glucose was 86 mg/dL, HbA1c 5.2%, and insulin 2.7 uIU/mL. My clinician notes called this “outstanding blood sugar balance and very low risk for diabetes.” That kind of feedback is worth more than any article or podcast telling you keto works.
Inflammation consistency. My hs-CRP (high-sensitivity C-reactive protein) has come back at 0.2 mg/L across all four draws. That is in the lowest cardiovascular risk category and has not budged despite changes in training intensity, travel, and life stress. This tells me that my baseline inflammatory load is genuinely low, not just a single good reading.
Biological age. Function Health calculated my biological age at 37.3 against a calendar age of 52, which is 15.5 years younger at the time of testing. I also tested on two other platforms (Hundred Health: 38.0, Superpower: 45.2), which confirmed the general direction even though the specific numbers varied.
What I Learned the Hard Way About Blood Testing
One of my ALT results (a liver enzyme) spiked above the normal range of 29 U/L during a mid-2025 draw. I was initially concerned, but it turned out I had my blood drawn the day after a hard leg workout. Intense resistance training, especially eccentric movements like heavy squats and lunges, causes temporary muscle cell damage that releases enzymes into the bloodstream. On paper, it looks like liver stress. My next draw showed ALT back at 18 U/L, perfectly normal.
That experience taught me two things. First, schedule your blood draw at least 48 to 72 hours after your last intense workout. Second, a single out-of-range result is not the whole story. The value of longitudinal testing is that you learn the difference between a real problem and a timing artifact. That lesson alone has saved me unnecessary worry and potentially unnecessary follow-up testing with my doctor.
How Function Health Compares to Alternatives
I have now tested on four different platforms: Function Health, Hundred Health, Superpower, and traditional bloodwork through my doctor. Here is how Function Health stacks up.
Compared to a standard annual physical, there is no contest. My doctor's panel tests roughly 20 markers and misses most of what Function Health catches. Compared to Hundred Health ($499/year, over 160 markers), the pricing and biomarker depth are competitive. Compared to InsideTracker (over $700 for comparable testing), Function Health provides nearly twice the biomarkers at roughly half the cost. Compared to Superpower ($199/year), Function Health costs more but the biomarker depth, twice a year testing included rather than just one and clinician review may justify the difference in my experience.
Who Function Health Is Not For
Function Health is not a replacement for your primary care doctor. It does not diagnose or treat conditions. If you get an alarming result, you still need to follow up with your physician.
It is also not worth it if you are not going to do anything with the data. If you get your results and never look at them again, or never make any changes to impact your labs, you are paying $365 for a dashboard you do not use. The value comes from tracking trends over time, making lifestyle adjustments based on what you learn, and retesting to see if those adjustments are working.
And if you are on a tight budget, Superpower at $199/year is a legitimate alternative that covers the fundamentals. You can read my Superpower review here.
Is There a Function Health Discount Code?
Yes. Heal Nourish Grow readers can save $25 on a Function Health annual membership through my referral link. No promo code or coupon is needed at checkout. The discount applies automatically when you sign up through the link. Use this link to skip the waitlist and save $25 on Function Health. This brings your first year down to $340, or about 93 cents a day for 100+ biomarkers tested twice a year with full clinician review.
Function Health does not have a traditional discount code or coupon code field at checkout. Their pricing model works through referral links instead of promo codes, which is why you will not find an active Function Health discount code on coupon aggregator sites that actually applies the savings. Search results for Function Health promo code or Function Health coupon code often return expired or never-valid codes from third-party sites. The referral link is the only reliable way to get a Function Health discount in 2026.
The $25 savings stacks with HSA and FSA eligibility. If you pay with HSA or FSA pre-tax dollars, your effective cost drops further by 25 to 35 percent depending on your tax bracket. Combined with the $25 referral discount, that brings the real out-of-pocket cost closer to $220 to $255 for a full year of biomarker testing.
The Bottom Line
At $1 per day, Function Health has paid for itself multiple times over in what it has taught me about my body. The hemoglobin recovery alone would have been worth it. The biological age result is motivating. The metabolic validation gives me confidence in my nutrition approach. And the longitudinal data has fundamentally changed how I think about health testing.
If you are the kind of person who tracks their sleep, wears a health wearable, or pays attention to what you eat, Function Health gives you the blood-level data that makes all of that other data more meaningful. You can skip the waitlist for Function Health here.
Get the Free Blood Test Biomarker Cheat Sheet
I put together a downloadable cheat sheet with the most important biomarkers to track, what optimal ranges look like, and which ones most doctors skip. Just click the button at the bottom of the email to download your copy.
frequently asked questions
How much does Function Health cost?
Function Health costs $365 per year. This includes two comprehensive blood draws covering 100+ biomarkers each, clinician-reviewed notes, biological age calculation, and AI health coach access. The membership is HSA and FSA eligible. Optional add-ons like ApoE genotyping and the Galleri cancer screening are available at additional cost.
Can you use HSA or FSA for Function Health?
Yes. Function Health is HSA and FSA eligible, which means you can pay with pre-tax dollars. Depending on your tax bracket, this can reduce the effective cost by 25 to 35 percent, bringing the real price closer to $235 to $275 per year.
Is Function Health covered by insurance?
No. Function Health is a membership service and is not covered by health insurance. However, the HSA and FSA eligibility partially offsets the out-of-pocket cost. If you tried to order the same biomarkers through traditional lab channels, the total cost would exceed $1,500 even with insurance co-pays.
Is there a Function Health discount code?
Yes. Heal Nourish Grow readers can save $25 on the annual Function Health membership through my referral link. No code is needed at checkout, the discount applies automatically. Use this link to save $25 on Function Health. This brings your first year cost down to $340 instead of $365.
Does Function Health have a promo code or coupon code?
Function Health does not use traditional promo codes or coupon codes at checkout. Discounts are applied through referral links instead. My referral link gives you $25 off your annual membership with no code required. Most Function Health promo code results on coupon aggregator sites are expired or never valid in the first place, because the platform has never used a code-based discount model.
