Function Health
110+ biomarker testing 2x/year with AI-driven insights - the platform that productized executive physicals.
The platform that took the $5,000 executive physical and turned it into a $499/year membership - and made it better.
Function Health's pitch is the rare one in longevity that actually delivers: 110+ biomarkers tested twice a year, results plotted as trends instead of single point-in-time numbers, AI insights flagging what changed and why it matters, clinician review for anything abnormal - all for $499/year.
What makes it work: the testing panel goes deep where standard primary-care panels stop (advanced lipid fractions, hormones, heavy metals, autoimmune markers, cancer screens), the trend visualization is what most people's primary care never offers, and the platform writes you in plain English about what changed since last cycle.
Where it isn't enough: it's a data-and-insight layer, not a treatment provider. If a marker is abnormal, you still need to see a clinician to act on it. For anyone managing peptide protocols, hormone optimization, or longevity-focused supplementation, this is the data infrastructure that actually closes the loop.
Anyone running peptides, optimizing hormones, on a longevity protocol, or just wanting twice-yearly comprehensive labs at a fixed price.
You already get comprehensive labs through your concierge clinic, or you only want the cheapest single-panel test (go InsideTracker).
Specifications
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Where this fits
Function Health Function Membership cross-shops across several editorial surfaces - the full brand catalog, the buyer-intent tags this item carries, the price band it qualifies for, and any execution playbook that uses it.
Function Health Function Membership - buyer FAQ
How does Function Health compare to InsideTracker?
Function tests 110+ biomarkers twice a year for $499/yr including clinician review. InsideTracker tests fewer biomarkers per panel but offers more flexible single-purchase testing and a more polished mobile app. Function wins on breadth and value-per-test; InsideTracker wins on user experience and à la carte flexibility. For longevity-pro buyers running peptide / hormone protocols, Function's broader panel is usually the right pick.
What biomarkers does Function actually test?
The 110+ panel covers advanced lipid fractions (LDL particle count, ApoB, Lp(a)), hormone panels (free T, estradiol, DHEA-S, cortisol, thyroid full), metabolic markers (HOMA-IR, fasting insulin, HbA1c), heavy metals (mercury, lead, arsenic), nutrient status (vitamins D, B12, folate, iron), inflammation markers (hsCRP, ferritin), autoimmune screens, and 4 cancer screens (PSA for men, CA-125 for women, etc). Stack matches or exceeds what most concierge clinics offer at 5-10x the price.
Where do I get the blood draw?
Function partners with Quest Diagnostics, which means you can use any of 2,200+ Quest patient service centers across the US. The Function app schedules the appointment, sends you a requisition, and you walk in for the draw. Results come back through the Function platform within 5-10 business days.
Does Function actually treat anything?
No. Function is a data + insights layer, not a treatment provider. If a marker comes back abnormal, you still need to see a clinician (your PCP, a concierge doctor, Marek Health, Hone Health, etc.) to act on it. The clinician review included with Function flags abnormal results but doesn't prescribe.
Mark Hyman is involved - does that matter?
Dr. Mark Hyman is a co-founder and serves as Chief Medical Officer. His functional-medicine perspective shapes what biomarkers Function tests and how results are framed (e.g. emphasis on metabolic health, inflammation, hormone optimization vs strictly conventional ranges). If you find Hyman's approach credible, Function is built around his philosophy. If you prefer purely conventional reference ranges, the breadth of testing still works but interpretation will read more functional-medicine-leaning.
Is it worth it vs my insurance?
Almost always yes for longevity-focused readers. Insurance-covered labs typically run a 20-30 marker panel once a year, ordered reactively (when you have a symptom). Function delivers 110+ markers twice yearly proactively (catch trends before they become problems). The $499 yearly cost is usually under the all-in cost of comparable cash-pay diagnostics.